Fixed to work with Xcode 5 and updated dependencies

# Fix for Xcode 5

According to this [question on Stack Exchange](http://stackoverflow.com/questions/18682267/cmake-ld-building-for-macosx-but-linking-against-dylib-built-for-ios-simulator#comment27532305_18682267) adding an additional flag makes the compilation work with Xcode 5:
> (...) Xcode 5 replaces gcc with clang and adds in a "-triple" option that specifies OSX as the target. If you pass "-miphoneos-version-min=7.0" on both gcc command lines it works. You can see the clang command line if you pass "--verbose" to gcc. (...)

Just for reference: [This post in a mailing list](http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/2013-September/016744.html) confirms the fix.

# Updated dependencies

I've updated the links to the dependencies:

- sqlite-autoconf-**3080100**.tar.gz (was sqlite-autoconf-**3071502**.tar.gz)
- geos-**3.4.2**.tar.bz2 (was geos-**3.3.7**.tar.bz2)