* Moved ir/irsymbol.cpp/h into ir/irdsymbol.cpp/h.

* Added #if IN_DMD versioning around DMD backend specific code in the D1 frontend, D2 is currently broken.
* All part of a greater cleanup scheme.

dmd/enum.c

@@ -27,7 +27,9 @@ EnumDeclaration::EnumDeclaration(Loc loc, Identifier *id, Type *memtype)
     maxval = 0;
     minval = 0;
     defaultval = 0;
+#if IN_DMD
     sinit = NULL;
+#endif
     isdeprecated = 0;
 }