This may negatively impact performance, as the (final, i.e.,
non-virtual) Expression::is... family is implemented in D and not
available inline in the C++ headers.
As RTInfoImpl contains unsupported global variables.
`object.RTInfo` is automatically instantiated by the front-end for each
aggregate starting with v2.085, incl. the special structs in the
`ldc.dcompute` module (representing pointers), so that dcompute was
basically totally broken.
Resolves#3009.
* Disable debug info for now Until I get it working.
* Don't recurse into uninstansiated templates
* Remove device only modules from objfiles.
* Remove typeid generation for dcompute.
* Dont generate typeinfo member functions
* Whitelist `__dcompute_reflect`
