[trivial] Fix warning in cast.c
fix Issue 13088 - Compiler segfaults with trivial case code
fix Issue 13087 - Error: no property 'xyz' for type 'Vec!4'
Merge pull request #3736 from 9rnsr/fix13087

[REG2.066a] Issue 13087 - Error: no property 'xyz' for type 'Vec!4'
fix Issue 11066 - Spurious warning 'statement is not reachable' with -profile
[Refactoring] in FuncDeclaration::semantic3
fix Issue 13024 - [ICE](expression.c line 1172) with implicit supertype conversion of different enums in array literal
fix Issue 13082 - Spurious error message with failed call to class ctor
Merge pull request #3733 from 9rnsr/fix13024

[REG2.066a] Issue 13024 - [ICE](expression.c line 1172) with implicit supertype conversion of different enums in array literal
fix Issue 13074 - Old opCmp requirement for AA keys should be detected
Fixed build with XCode.
Merge pull request #3741 from yglukhov/xcode_fix

Fixed build with XCode.
Merge pull request #3731 from 9rnsr/fix13074

Issue 13074 - Old opCmp requirement for AA keys should be detected
Added test case for druntime pull request 830.
Merge pull request #3745 from economicmodeling/coverage_test_case

Added test case for druntime pull request 830.
Add regression test for bug 7068.
Merge pull request #3746 from Safety0ff/test7068

Add regression test for bug 7068.
Merge pull request #3737 from 9rnsr/fix11066

Issue 11066 - Spurious warning 'statement is not reachable' with -profile
Remove extern "C" verror hacks now that va_list has been fixed
Issue 13109 - Show error on conflicting args -lib and -run