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.
Minor tweaks to handle input of control characters. Switched to double clicks, instead of single clicks, to activate XMLterm features (to protect the user).
Improved full screen implementation; added bold and underline styles. Centralized UI event handling. Added checks to limit number of output lines displayed. Added capability to interrupt hung output data streams. Nearing full backwards compatibility with xterm.
