Bump min iOS deployment version to 7.1 for spec fixture

We want to test that this works with XCTest, which is not available in iOS 6.1
Backout fix for loading test bundle in xcode6

This fails horribly in Xcode5 because the bundler loader is specified twice. It seems that
in Xcode6 the BUNDLE_LOADER shared setting is no longer respected. Their own templates
do not get this, so maybe it was overlooked and will be fixed. For now, feature specs for
templates will pass under Xcode5 but not 6.
Rename Cedar example spec to be more consistent
Fix OS X templates for Xcode 5

Needed to bring in the CEDAR_SPEC_IMPORTS macro and remove some scripts
for running with Sentest so that the test bundles run under XCTest now.
Add an OS X XCTest test bundle test target

Wanted to have test targets for running Cedar with XCTest and OCTest. This seemed
like a logical first step
Refactor some shared functions from iOS, OS X test runner