Fix Issue 199 - Label causes scope to collapse into parent
Remove special case powexp optimisation
Move CPP_MANGLE into cppmangle.c
Merge pull request #3031 from ibuclaw/specialpow

Remove special case powexp optimisation
Merge pull request #3024 from yebblies/issue199

Issue 199 - Label causes scope to collapse into parent
Merge pull request #3039 from yebblies/CPP_MANGLE

[cleanup] Move CPP_MANGLE into cppmangle.c
Fix newly introduced variable shadowing
Merge pull request #3042 from yebblies/expshadow

[DDMD] Fix newly introduced variable shadowing
Implement a callback-based builtin hook using mangled names
Merge pull request #2811 from yebblies/builtin

[Unified Frontend] Implement a callback-based builtin hook using mangled names