Comparisons didn't work correctly in the other direction as they were not
reversed as needed. Fix this by adding wxDEFINE_COMPARISON_REV() macro which
defines comparisons in terms of the reverse operations and use it for both
wxUniChar and wxUniCharRef.
Closes#14547.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72268 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Disable unit tests involving operations (such as conversions between UTF and
anything but plain ASCII) not available in ANSI build.
This fixes the test suite for non-Unicode build under Unix.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@66103 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1. changed c_str() to return wxCStrData (implicitly convertible to wxChar*)
2. added template type-safe wrappers for vararg functions
3. added wxUniChar class representing single Unicode character
4. changed wxString::operator[] and wxString::iterator to return wxUniChar
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@44865 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
