Fix 11745: Private unit tests can not be invoked.
Added unittests for issue 11745.
incorrect strlen usage

- causes overflow for empty string
Replace WINDOWS_SEH code with a larger stack size - this matches the non-windows implementation
Make Array take the actual type of the stored element
Implement Statement::toIR in terms of a visitor interface
Remove dead TOKtobool and Bool
Merge pull request #2999 from yebblies/TOKtobool

Remove dead TOKtobool and Bool
Merge pull request #2754 from yebblies/s2irvisitor

Implement Statement::toIR in terms of a visitor interface
fix Issue 11755 - Operator <>= and !<>= with arrays make internal error in e2ir

Currently backend layer implicitly translates NCEG operators to the corresponding integer operators in non-floating comparisons. If no corresponding operator exists, it had been reported backend error, and now ICE causes.
Fix Issue 11790 - ICE(interpret.c): passing creation of array with type string as size to CTFE
Merge pull request #3000 from 9rnsr/fix11755

[REG2.065a] Issue 11755 - Operator <>= and !<>= with arrays make internal error in e2ir
Merge pull request #3003 from yebblies/issue11790

Issue 11790 - ICE(interpret.c): passing creation of array with type string as size to CTFE
Add type visitor
fix Issue 11776 - [ICE] Assertion failure: 'tf->next == NULL' on line 119 in file 'mangle.c'
fix Issue 11800 - alias this matching incorrectly changes lvalue-ness
Merge pull request #3008 from 9rnsr/fix11776

[REG2.065a] Issue 11776 - [ICE] Assertion failure: 'tf->next == NULL' on line 119 in file 'mangle.c'
Move existing C++ mangler into a visitor class
post-align section size
Merge pull request #3007 from yebblies/cppmangle

[DDMD] Move existing C++ mangler into a visitor class