Issue 3882: Remove pure qualifiers from assumeSafeAppend and _d_arrayshrinkfit prevent calls from being optimized away
Merge pull request #747 from nordlow/warn-unused-returns

Issue 3882: Remove pure qualifier from assumeSafeAppend and _d_arrayshrinkfit
stdarg is nothrow
Merge pull request #745 from WalterBright/nothrow-stdarg

stdarg is nothrow
Fix Issue 12427 - Building druntime with -debug=PRINTF fails.
Merge pull request #748 from AndrejMitrovic/Fix12427

Issue 12427 - Building druntime with -debug=PRINTF fails.
remove gratuitous forward references
this revealed a bad call to onFinalizeError
remove unused forward declarations to gc_*
Merge pull request #750 from rainers/cleanup_adi

remove unused forward declarations to gc_*
Merge pull request #749 from rainers/cleanup_lifetime

[refactor] remove gratuitous forward references in lifetime.d
avoid strict purity inference by passing void pointer
Merge pull request #753 from rainers/workaround_bug11461

Workaround 11461: avoid strong purity inference by passing null pointer to onOutOfMemoryError