Log Message:
Update to 1.7f:
	*** Change the meaning of FLYSPELL-LARGE-REGION. From now on,
	if FLYSPELL-LARGE-REGION is nil, regions are treated as small.
	*** Improve doublon detection in TeX mode. The fix gets rid
	of errors introduced by indexes.
	*** Add the FLYSPELL-PROG-MODE-HOOK to FLYSPELL-PROG-MODE.