Merge pull request #175 from alexrp/master

Add D_X32 version identifier.

version.dd

@@ -277,6 +277,7 @@ version($(I identifier)) // add in version code if version
 	$(TR $(TD $(B D_InlineAsm_X86)) $(TD $(DDLINK iasm, Inline Assembler, Inline assembler) for X86 is implemented))
 	$(TR $(TD $(B D_InlineAsm_X86_64)) $(TD $(DDLINK iasm, Inline Assembler, Inline assembler) for X86-64 is implemented))
 	$(TR $(TD $(B D_LP64)) $(TD Pointers are 64 bits (command line $(DPLLINK dmd-windows.html#switches, switch) $(B -m64))))
+	$(TR $(TD $(B D_X32)) $(TD Pointers are 32 bits, but words are still 64 bits (x32 ABI)))
 	$(TR $(TD $(B D_PIC)) $(TD Position Independent Code (command line $(DPLLINK dmd-windows.html#switches, switch) $(B -fPIC)) is being generated))
 	$(V2 $(TR $(TD $(B D_SIMD)) $(TD $(DDLINK simd, simd, Vector extensions) (__vector and __simd) are supported)))
 	$(V2 $(TR $(TD $(B D_Version2)) $(TD This is a D version 2 compiler)))