Merge pull request #3105 from 9rnsr/fix11930

[REG2.065a] Issue 11930 - Alias this not considered in is(T unused: U) matching
Merge pull request #3104 from 9rnsr/fix11896

[REG2.065a] Issue 11896 - isVirtualMethod related GitHub HEAD regression (works with 2.064)
Merge pull request #3097 from 9rnsr/fix11924

[REG2.065a] Issue 11924 - inout Variadic Template Parameters
Merge pull request #3094 from WalterBright/fix11922

[REG2.065a] Issue 11922 - ICE on nonexistent identifier in templated auto method
Merge pull request #3125 from 9rnsr/fix11944

Issue 11944 - ICE(expression.c) Assertion `f' failed.
Merge pull request #3139 from 9rnsr/fix11968

Issue 11968 - ICE(expression.c) Crash when deleting __FILE__