Do not allocate TypeFunction on the stack
Merge pull request #2220 from yebblies/stackalloc

[DDMD] Do not allocate TypeFunction on the stack
fix Issue 10503 - Octal enums don't work anymore
Merge pull request #2279 from 9rnsr/fix10503

[REG2.064a] Issue 10503 - Octal enums don't work anymore
fix issue 10505 - anonymous enum members cannot have different types
Merge pull request #2277 from hpohl/10505

[REG2.064a] fix issue 10505 - anonymous enum members cannot have different types