Added the CURLHandle+extras.h header to the CURLHandle framework for use by the CURLHandleTester
Modified the build architecture to be 86_x64 instead of 32bit/ppc
Set the deployment target to be 10.7.
Added the CURLHandle.framework built by the CURLHandle project to the framework search path and for linking.
update xcode version from 4.4 to 4.6