Merge pull request #1985 from yebblies/stringandnull

[DDMD] Workaround bug in dmd: common type of string literal and null does not convert to const char *
Refactor win32 makefile to build four libs before linking
Add backend-independent stub glue layer
Disable verstr import
Replace expression macro with lines in it
Turn el_setLoc into a function
Remove (type) where type is a variable
Get rid of function-local extern function declaration
Expand macros
Initializer lists
typedef X { } name
Replace a macro with #ifdef
Replace another rename macro with an #ifdef
Remove more #define aliasing
Replace another #define alias (tfloat2)
entity.c: wrap array of structs elements
Implicit conversions and shadowing
Move scopeless constants out of classes
0->Loc
unsigned char* -> const char*
Breaks utf8 BOM
Make char unsigned
More implicit conversion errors
Mostly implicit conversions
Stack allocations, implicit conversions
Don't overload for enum types