Add iOS support to ssl.gyp and zlib.gyp

Nothing builds these targets yet, but getting these working makes it easier to get all.gyp working for iOS.

BUG=None
TEST=None


Review URL: https://chromiumcodereview.appspot.com/10692060

Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 2ddfd559e6889f8c029a7c499b4cbe360d55c9a5
1 file changed