Make Scope a struct
Merge pull request #2307 from yebblies/scopestruct

[DDMD] Make Scope a struct
Expand BinAssignExp macros in expression.h
Expand macros in lexer
Expand macros in mtype
Expand macros in traits
Expand macros in parser
Remove macros in lexer.h
Expand macro in interpreter
Make char unsigned
Mostly implicit conversions
No implicit real -> creal
Use memcpy to copy classes, not assignment
No implicit Identifier -> char* conversion
char* -> const char*
ptrvalue is char* not void*
Don't call memcmp with different types
Add missing consts for qsort
Reuse the function pointer definition from expression.h for apply
Clean up interpretCommon function pointers
Tweak to get functions recognised as identical
More const