fix Issue 3449 - const and invariant struct members do not behave according to spec
AA tests harmonization with new AA implementation
fix Issue 13673 - ICE(backend/cod2.d 5114)
refactor - reduce CTFE memory consumption pt 1
Merge pull request #4113 from WalterBright/fix13673

fix Issue 13673 - ICE(backend/cod2.d 5114)
fix Issue 11216 - Make synchronized statement `nothrow`

- mark _d_monitorenter/exit as nothrow
Merge pull request #4067 from IgorStepanov/newaa-dmd-tests

[new AA] AA tests harmonization with new AA implementation
add target for default dmd.conf

- works for the common dmd/druntime/phobos folder layout

- does not overwrite existing dmd.conf files
Fix unconvertible comment
Fix shadowing
Do not rely on implicit conversion from integer to bool
Do not use reserved identifier '__dollar' for a variable name
Do not name a variable 'pure'
Fix Issue 10311 - GDB prints wrong value for variable updated from closure
Merge pull request #4074 from tramker/bug10311

Fix Issue 10311 - GDB prints wrong value for variable updated from closure
Merge pull request #4115 from MartinNowak/fix11216

fix Issue 11216 - Make synchronized statement `nothrow`
Merge pull request #4116 from yebblies/intbool

[DDMD] Do not rely on implicit conversion from integer to bool
Merge pull request #4120 from yebblies/gagshadow

[DDMD] Fix shadowing
Merge pull request #4119 from yebblies/commentxx

[DDMD] Fix unconvertible comment
Merge pull request #4117 from yebblies/dollar

[DDMD] Do not use reserved identifier '__dollar' for a variable name