Add Glibc predefined global version and insert all C runtimes into the list of predefined global versions
Get rid of the last usage of std.c, which has been moved to core.sys in druntime
pointerArithmetic now returns UnionExp
Merge pull request #4161 from WalterBright/pointerarith

CTFE: pointerArithmetic now returns UnionExp
pointerDifference() now returns UnionExp
Merge pull request #4162 from WalterBright/pointerdiff

CTFE: pointerDifference() now returns UnionExp
[Refactoring] fix code style in compilable/interpret3.d
[Refactoring] Add exceptionOrCant to make error handling shorter
Merge pull request #4163 from 9rnsr/refactor_ctfe

[Refactoring] A little code cleanup in CTFE interpreter
CTFE: copyLiteral() returns UnionExp
Merge pull request #4164 from WalterBright/copyliteral

CTFE: copyLiteral() returns UnionExp
[Refactoring] Remove unused variable evaluatingArgs
[Refactoring] reduce code indent depth
CTFE: paintTypeOntoLiteral() to UnionExp
Merge pull request #4166 from WalterBright/paintliteral

CTFE: paintTypeOntoLiteral() to UnionExp
Merge pull request #4165 from 9rnsr/refactor_ctfe

[Refactoring] Reduce code indent depth in CTFE interpreter
fix Issue 13779 - gdb can't find frame base when using ld.gold

- missing relocation addend .debug_info reference to .debug_loc
add comment on #else branch
refactoring

- add dwarf_apprel32 to encapsulate the difference between relocations
  with addend (.rela, 64-bit) and those without addend (.rel, 32-bit)
Merge pull request #4168 from MartinNowak/fix13779

 fix Issue 13779 - gdb can't find frame base when using ld.gold