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.

prefix=@prefix@
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${exec_prefix}/include
 
Name: dwindows
Description: Dynamic Windows Cross platform UI Toolkit
Version: @VERSION@
Libs: -L${prefix}/lib -ldwindows @LIBS@
Cflags: -I${prefix}/include @CFLAGS@ -D@DW_DEFINE@