configure.ac improvements
Fix typo
Fixx off-by-one error when debug-printing shortcut list
Remove makefile rule that automake provides for us
Fix compilation when configured with --disable-browser

Original nano commit: 4686
http://svn.savannah.gnu.org/viewvc?view=rev&root=nano&revision=4686
Original nano commit message:
	Fixing compilation with --disable-browser.
Remove 'do_browser_help' function since its functionality is contained within 'do_help_void'

Original nano commit: 4687
http://svn.savannah.gnu.org/viewvc?view=rev&root=nano&revision=4687
Original nano commit message:
	Removing the superfluous function 'do_browser_help()'.
Fix --enable-utf8/--disable-utf8 configure flags

Original nano commit: 4689
http://svn.savannah.gnu.org/viewvc?view=rev&root=nano&revision=4689
Original nano commit message:
	 	Allowing --disable-utf8 and --enable-utf8 to work.
Fix compilation with --disable-utf8