Removed experimental hooks for wlscope and file name substitution, only include and require now substitute the filename.

case insensitive regexp extension
cleanup of error reports

Added print css to wf

implemented EXECUTE-PARSING-FILE (new-input only).

Added stack effects to kernel/input.fs

replaced most occurences of COMPARE with STR= and STRING-PREFIX?

new words s\" .\" \"-parse for dealing with non-printing characters

new-input is true (so setting that to false in machpc.fs gets you the old
input handling back).