Android: Fix DW_SIGNAL_HTML_MESSAGE, there were 3 problems in the last commit. Passed HTML_CHANGE instead of HTML_MESSAGE in a copy and paste problem. The injected javascript code needed the first parameter quoted. The interface callback seems to be run on a thread that was not initialized. Presumably the web content has its own thread so need to initialize the environment.

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