Merge pull request #3140 from 9rnsr/fix11969

Issue 11969 - ICE(statement.c) When mixing in a string literal containing errors
Merge pull request #3212 from mike-pm/master

Remove repeated words in error message
Merge pull request #3222 from 9rnsr/fix12079

[REG2.065a] Issue 12079 - Internal error: backend/cod4.c 358 for associative array access
Merge pull request #3225 from 9rnsr/fix12080

[REG2.065a] Issue 12080 - Internal error: backend/symbol.c 1035 for invariant
Merge pull request #3221 from 9rnsr/fix12070

[REG2.065a] Issue 12070 - Variant opCall not static
Merge pull request #3204 from 9rnsr/fix11824

[REG2.065a] Issue 11824 - A stack variable escaping problem in CTFE Phobos code
Merge pull request #3183 from 9rnsr/fix12047

[REG2.065a] Issue 12047 - UDAs are not checked
Merge pull request #3228 from 9rnsr/2.065

Puck up changes from master to 2.065 branch