Enabled ARC.
Fixed iOS build for ARC
Minor ARC tidyings.
Merge branch 'develop' into arc
improved string difference routine to return a window around the lines that didn't match
improved string difference routine to return a window around the lines that didn't match
Merge branch 'arc' of git://github.com/elegantchaos/ECLogging into arc

Conflicts:
	Source/Generic/NSString+ECLogging.m
added window constant
Added another diff mode.
Added script to verify signing of an app.
Use other code sign flags when re-signing.

Added temporary option to disable timestamp when signing.
tweaked signing scripts
Tweaked signing script.
signing tweaks
assertion methods return BOOL so that test code can respond to a failure with additional actions
Tweaked to recursively sign frameworks.
Fixed some bugs due to recursion with global variables (bash scripting - aaagh!)
Tidied up a bit and reduced the logging.
Pick up the bundle id from Frameworks before signing.
Set custom location for precompiled headers.