Replaced std.contracts with std.exception throughout

std/algorithm.d

@@ -46,7 +46,7 @@ Authors:   $(WEB erdani.com, Andrei Alexandrescu)
 module std.algorithm;
 
 import std.c.string;
-import std.array, std.container, std.contracts, std.conv, std.date,
+import std.array, std.container, std.conv, std.date, std.exception,
     std.functional, std.math, std.metastrings, std.range, std.string,
     std.traits, std.typecons, std.typetuple;
 
@@ -776,7 +776,7 @@ unittest
 
 // swap
 /**
-Swaps $(D lhs) and $(D rhs). See also $(XREF contracts, pointsTo).
+Swaps $(D lhs) and $(D rhs). See also $(XREF exception, pointsTo).
 
 Preconditions:
 
@@ -1646,7 +1646,7 @@ log(haystack.length)) steps are needed to position $(D haystack) at
 the beginning of the search. Also, once positioned, the search will
 continue only as long as haystack and the needle start with equal
 elements. To inform $(D find) that you want to perform a binary
-search, wrap $(D haystack) with a call to $(XREF contracts,
+search, wrap $(D haystack) with a call to $(XREF exception,
 assumeSorted). Then $(D find) will assume that $(D pred) and $(D less)
 are in the right relation and also that $(D haystack) is already
 sorted by $(D less).

std/array.d

@@ -14,7 +14,7 @@ module std.array;
 
 import std.c.stdio;
 import core.memory;
-import std.algorithm, std.contracts, std.conv, std.encoding, std.range,
+import std.algorithm, std.conv, std.encoding, std.exception, std.range,
     std.string, std.traits, std.typecons, std.utf;
 version(unittest) private import std.stdio;
 

std/boxer.d

@@ -78,7 +78,7 @@ module std.boxer;
 private import std.format;
 private import std.string;
 private import std.utf;
-import std.contracts;
+import std.exception;
 
  /* These functions and types allow packing objects into generic containers
   * and recovering them later.  This comes into play in a wide spectrum of

std/concurrency.d

@@ -39,7 +39,7 @@ private
     //import core.sync.condition;
     //import core.sync.mutex;
     import std.algorithm;
-    import std.contracts;
+    import std.exception;
     import std.range;
     import std.stdio;
     import std.range;

std/date.d

@@ -24,7 +24,7 @@ module std.date;
 
 private import std.stdio;
 private import std.dateparse;
-import std.c.stdlib, std.contracts, std.conv;
+import std.c.stdlib, std.conv, std.exception;
 
 /**
  * $(D d_time) is a signed arithmetic type giving the time elapsed

std/demangle.d

@@ -24,7 +24,7 @@ private import std.ctype;
 private import std.string;
 import std.conv;
 private import std.utf;
-import std.contracts;
+import std.exception;
 
 private import std.stdio;
 

std/file.d

@@ -21,7 +21,7 @@ module std.file;
 import core.memory;
 import core.stdc.stdio, core.stdc.stdlib, core.stdc.string,
     core.stdc.errno, std.algorithm, std.array,
-    std.contracts, std.conv, std.date, std.format, std.path, std.process,
+    std.conv, std.date, std.exception, std.format, std.path, std.process,
     std.range, std.regexp, std.stdio, std.string, std.traits, std.typecons,
     std.typetuple, std.utf;
 version (Win32)

std/format.d

@@ -18,9 +18,9 @@ module std.format;
 //debug=format;                // uncomment to turn on debugging printf's
 
 import core.stdc.stdio, core.stdc.stdlib, core.stdc.string;
-import std.algorithm, std.array, std.bitmanip, std.contracts, std.conv,
-    std.ctype, std.functional, std.range, std.stdarg, std.string, std.system,
-    std.traits, std.typetuple, std.utf;
+import std.algorithm, std.array, std.bitmanip, std.conv,
+    std.ctype, std.exception, std.functional, std.range, std.stdarg,
+    std.string, std.system, std.traits, std.typetuple, std.utf;
 version(unittest) {
     import std.stdio, std.typecons;
 }

std/functional.d

@@ -20,7 +20,7 @@ module std.functional;
 
 import std.metastrings, std.stdio, std.traits, std.typecons, std.typetuple;
 // for making various functions visible in *naryFun
-import std.algorithm, std.contracts, std.conv, std.math, std.range, std.string; 
+import std.algorithm, std.conv, std.exception, std.math, std.range, std.string;
 
 /**
 Transforms a string representing an expression into a unary

std/getopt.d

@@ -30,8 +30,8 @@ Distributed under the Boost Software License, Version 1.0.
 */
 module std.getopt;
 
-private import std.string, std.conv, std.traits, std.contracts, std.bitmanip,
-    std.algorithm, std.ctype;
+private import std.string, std.conv, std.traits, std.bitmanip,
+    std.algorithm, std.ctype, std.exception;
 
 //version (unittest)
 //{

std/md5.d

@@ -87,7 +87,7 @@ module std.md5;
 //debug=md5;		// uncomment to turn on debugging printf's
 
 import std.string;
-import std.contracts;
+import std.exception;
 import std.c.stdio : printf;
 
 /***************************************

std/process.d

@@ -28,7 +28,7 @@ private import std.conv;
 private import std.string;
 private import std.c.process;
 private import core.stdc.errno;
-private import std.contracts;
+private import std.exception;
 version (Windows)
 {
     import std.array, std.format, std.random, std.file;

std/random.d

@@ -54,7 +54,7 @@ Distributed under the Boost Software License, Version 1.0.
 */
 module std.random;
 
-import std.algorithm, std.c.time, std.contracts, std.conv, std.date, std.math,
+import std.algorithm, std.c.time, std.conv, std.date, std.exception, std.math,
     std.numeric, std.process, std.range, std.stdio, std.traits, core.thread;
 
 // Segments of the code in this file Copyright (c) 1997 by Rick Booth

std/range.d

@@ -16,7 +16,7 @@ Authors:   $(WEB erdani.org, Andrei Alexandrescu)
 module std.range;
 
 public import std.array;
-import std.contracts;
+import std.exception;
 import std.traits;
 import std.typecons;
 import std.typetuple;

std/stdio.d

@@ -18,7 +18,7 @@ public import core.stdc.stdio;
 import std.stdiobase;
 import core.memory, core.stdc.errno, core.stdc.stddef, core.stdc.stdlib,
     core.stdc.string, core.stdc.wchar_;
-import std.algorithm, std.array, std.contracts, std.conv, std.file, std.format,
+import std.algorithm, std.array, std.conv, std.exception, std.file, std.format,
     std.range, std.string, std.traits, std.typecons,
     std.typetuple, std.utf;
 

std/string.d

@@ -28,7 +28,7 @@ module std.string;
 private import core.exception : onRangeError;
 import core.stdc.stdio, core.stdc.stdlib,
     core.stdc.string, std.algorithm, std.array,
-    std.contracts, std.conv, std.ctype, std.encoding, std.format,
+    std.conv, std.ctype, std.encoding, std.exception, std.format,
     std.metastrings, std.range, std.regex, std.stdarg, std.stdio, std.traits,
     std.typetuple, std.uni, std.utf;
 

std/typecons.d

@@ -51,8 +51,8 @@ Authors:   $(WEB erdani.org, Andrei Alexandrescu),
            Shin Fujishiro
  */
 module std.typecons;
-import core.stdc.stdlib, std.algorithm, std.array, std.contracts, std.conv,
-    std.metastrings, std.traits, std.typetuple, core.memory;
+import core.stdc.stdlib, std.algorithm, std.array, std.conv,
+    std.exception, std.metastrings, std.traits, std.typetuple, core.memory;
 version(unittest) import std.stdio;
 
 /**

std/uri.d

@@ -33,7 +33,7 @@ private import std.ctype;
 private import std.c.stdlib;
 private import std.utf;
 private import std.stdio;
-import std.contracts;
+import std.exception;
 
 class URIerror : Error
 {

std/utf.d

@@ -28,7 +28,7 @@
  */
 module std.utf;
 
-import std.contracts, std.conv, std.range, std.traits, std.typecons;
+import std.conv, std.exception, std.range, std.traits, std.typecons;
 
 //debug=utf;        // uncomment to turn on debugging printf's
 

std/variant.d

@@ -56,7 +56,6 @@
  * Copyright: Copyright Andrei Alexandrescu 2007 - 2009.
  * License:   <a href="http://www.boost.org/LICENSE_1_0.txt">Boost License 1.0</a>.
  * Authors:   $(WEB erdani.org, Andrei Alexandrescu)
- * Credits:   Brad Roberts came up with the name $(D_PARAM contracts).
  *
  *          Copyright Andrei Alexandrescu 2007 - 2009.
  * Distributed under the Boost Software License, Version 1.0.
@@ -68,7 +67,7 @@ module std.variant;
 import std.traits, std.c.string, std.typetuple, std.conv;
 version(unittest)
 {
-    import std.contracts, std.stdio;
+    import std.exception, std.stdio;
 }
 
 private template maxSize(T...)