Win: Fix dw_mle_set_word_wrap() on Windows when -DRICHEDIT is enabled for MLEs. Add a Word Wrap checkbox to dwtest for testing changing word wrap on the fly. Rich Edit is not fully tested so this will probably land as default in 3.2.

[Desktop Entry]
Name=Dynamic Windows Test
Exec=@prefix@/bin/dwtest 
Terminal=false
MultipleArgs=false
Type=Application
Categories=Application;Development;X-Red-Hat-Base;