Fixed CLI and CSharp support for out parameter const char strings.
Added test for out parameter const char strings.
Added StringOutRef test.
Moved const char string in/out into its own test function.
Fixed const char string CS_IN_OUT case.
Added reference test case.
Merge pull request #307 from ddobrev/master

Filled in default values, if any, of private overrides
Merge pull request #306 from tomspilman/str_inout

Const String In/Out Support
Restored the generation of ignored classes.

Signed-off-by: Dimitar Dobrev <dpldobrev@yahoo.com>