cm versioning: Empty keys == default keys

Don't assume the path to the signing key is the default, it can
be empty and have the same meaning...

Change-Id: Id545d6436e9f21d6b62eec5a317ea7665190f104
apns: orange austria is no more, now owned by 3

Change-Id: I5d333a79a8b3674136508d906509fb3a1a72ab1c
Merge pull request #13 from CyanogenMod/cm-11.0

update fork