some more patches for firefox

[Mikhail T.]

I have some more patches for firefox. The most significant difference
is avoiding to extract/compile Mozilla's own implementation of libm
(descendant of the same stuff we have in /usr/src/lib/msun).

I'm also fixing a handful of warnings, but firefox still hangs on
occasion and, in light of my earlier e-mail (viz. Deer Park) it,
probably, makes little sense to pursue it.

My update is at http://aldan.algebra.com:8015/~mi/firefox.update.bz2

It will create a handful of new files/patch-warnings* patches. I'm not
sure, if these are truly helpful, however (other new patches, probably,
are). Firefox may hang on startup (or shortly after) with or without
them.

It _seems_, the misbehavior is less frequent, when I use these extra
warning-patches (I have both version installed in parallel), but it may
just be my perception.

Take a look, please, and see if these changes make sense to you... It
may be worth it to re-arrange the hunks and/or rename the patch-files.

	-mi

P.S. I do not think, I have Jeremy's nspr vs. firefox-nspr change in
there -- it would need to be merged in too.