Avoiding firefox' own zlib

[Mikhail Teterin]

Hello!

I'm pretty sure, I've reported this already. Firefox checks the "system" 
libz's version and insists on it 1.2.3, because there was a security flaw in 
the 1.2.2.

FreeBSD patched the flaw years ago _without_ bumping the version number, so 
firefox' configure misdetects and decides to build the bundled zlib instead 
of using the perfectly good "system" one.

The following hunk should be added to files/patch-configure to stop this 
silliness (mind the tabs/spaces):

	@@ -1022,5 +1022,5 @@
	 MOZJPEG=62
	 MOZPNG=10207
	-MOZZLIB=1.2.3
	+MOZZLIB=1.2.2
	 NSPR_VERSION=4
 
Other Mozilla-ports could use this too... Yours,

	-mi