Change script to extract boost from subversion.

Use lipo out of the arm tools directory so it knows about armv7s

Update the extract-combine-repack sequence to handle the armv7s architecture.

Update to work with IOS 6.0 SDK.

Note: The repository used to contain a tarball with boost.
It has been rebased and filter-branched out to make the repository smaller.
Also build a osx framework.
Remove options library as it generates a conficting .o file to filesystem
which will cause undefined symbols when using the filesystem library.

Add date_time.
Updated to iOS SDK 6.1.