keyguard: enable magnetic target if no custom targets defined

When no custom target is defined (the "reset" button is pressed
in settings), the unlock target will always be at the right
regardless of the direction the user dragged to.

Change-Id: I0a2b1cd5dc7a2840c23d83a26593513cbc880c08
Stylus gestures features (1/2)

Forward-port of https://github.com/CyanogenMod/android_frameworks_base/commit/9f3ee9f7c0877fcfbe90a7c176481f949194fb75
to JB

Change-Id: I9c8a03dce226d2463659846ff3a12435efdf5c1d
Merge "Stylus gestures features (1/2)" into cm-10.1
Merge "keyguard: enable magnetic target if no custom targets defined" into cm-10.1
Merge remote branch 'cm/cm-10.1' into cm-10.1