Changed xmlterm/ui/Makefile.in to use CHROME vars to handle content/skin resources (bug 34416); eliminated directories xmlterm/ui/content and xmlterm/ui/skin.
Implemented full screen operations in XMLTerm, although still buggy.
Commands like 'less', 'vi', and 'emacs -nw' now work in stand-alone xmlterm,
although scrolling is still messed up. Compiles with Feb21 tree.