Added changes described in http://sourceforge.net/mailarchive/message.php?msg_id=1291084
Fixed autoindentation bug introduced by previous commit
Added support for regular expressions in simple hiliter machine ('x' character in state's flags)
Don't treat "top-level" \` as single ` (problems when hiliting libtool script)
Fixed problem with stripping empty comments
RxExecMatch added - checks whether regexp matches given string, does not perform any search
Set icons for X11
Display file size in K or M if file too big