Testing bundles must have their deployment target set to 10.9 for XC6
Fix system version check methods for 10.10

Fixes #1938
Update tests to run on XC6 using XCTest/ARC
Tidy up tests and schemes

Add a new qstest script from running tests from the command line
Merge branch 'i1938' of github.com:quicksilver/Quicksilver into i1938
don't treat 10.10 like 10.1

fixes #1938
make sure OS 11.0.0 is recognized as newer than 10.x.x
Revert "don't treat 10.10 like 10.1"

This reverts commit a852ab7d663c180715c6bdab2f609cc29c35bf54.
include Sparkle's version comparator

- include license
- removed unnecessary import statements from SUStandardVersionComparator.m
use Sparkle's version comparator for plug-in requirements
Merge pull request #1939 from quicksilver/i1938

Fix version comparisons for 10.10