Upgrade to latest OCMock 3.1 so we can test against 64bit cpus
Fix StringsTest.m XCTAssertEqual no longer supports c structs,
convert to use NSEqualRanges wrapped within an XCAssertTrue
Switched the originalText within Task.h from a weak pointer to a
strong to make existing test cases pass again. Not sure if this
was broken before hand or is something new with a later revision
of iOS