update SystemUI's proguard.flags

Change-Id: I5aa73eddd3fea6cddeddaf94e202d8de870e7df5
Clean up unnecessary backslashes

* Last line in a PRODUCT_COPY_FILES block shouldn't end with backslash

Change-Id: I57b4914048a2a17ff98057844941898b682dbcd5
Ignore null stylus gesture settings

If the user performs a stylus gesture that has not been configured in
the settings at all, the gesture filter would incorrectly interpret the
setting's null value as an app launch action.

Change-Id: If7f600a688bb7b5e0a9a2e912c3d6183a9c9a69e
Allow multiple emulated storages at the same time.

Only do multiuser mapping for primary emulated storage as per google docs.
Allow all non-primary emulated storage to have id other than 0 so that
it could be distinguished from the primary volume.

Change-Id: I7b70b9067fd6211055fb9074710f48107d7b0e8e
Merge remote-tracking branch 'cm/cm-10.1' into cm-10.1