added emacs/emacs, removed emacs/README
bin/replace.pl: if the lookup table does not exist, start the editor
		and exit
bin/addtotable.pl:  avoid unnecessary lookups through the use of check
		    files

.gitignore: ignore the checkfiles
replace.pl: use constants instead of variables to specify the editor
	    and its parameters
added projects/components
removed obsolete tmp directories