Fixed ModuleInfo generation to no longer use the ModuleInfo class' default initializer for types/defaults, it's unsafe as initializers don't necesarily match the "formal" type. There might be explicit padding. Changed -g switch to emit DW_LANG_D debug info, make demangling work with a patched GDB, still more work to do for full support of D's Dwarf extensions. Added getNullValue helper method.

syntax: glob
*.bc
*.o
*.obj
*.orig
*.a
*.s
*.so
Makefile
CMakeFiles
CMakeCache.txt
cmake_install.cmake
.DS_Store

syntax: regexp
^obj/.*
^tests/dstress
^tests/reference
^tango
^import
^bin/ldc
^idgen
^idgen.make
^impcnvgen
^impcnvgen.make
^ldc.make
^dmd2?/impcnvtab.c
^dmd2?/id.c
^dmd2?/id.h
^tests/runminitest
^tests/findregressions
^tests/makewebstatistics
^tests/mini/obj/.*