Fix occasional ring volume reset

When PHONE_INCOMING_RING message accidentaly arrives to CallNotifier
immediately after the user answers the call, the call state is still
RINGING instead of OFFHOOK, so ring plays again, causing audio
driver to switch from just entered IN_CALL mode back to RINGING mode,
which can lead to completely mute phone call - no side of call can be
heard.

Above also affects increasing ring feature.

Prevent this scenario by calling silenceRinger() instead of stopRing()
at the beginning of answerCall(), so not only the current ring is
stopped, but also the possible next ring prevented.

Change-Id: I358ffd93f4233ab1a957af18ec40edc0fef04014
Phone mods

Landscape in call && Exit to home

Patch2 : Cleanup
patch3 : Whitespace cleanup - removed references to preferences
	that were not needed/used/

Change-Id: I1eb5904b9c5f0a252d9e1a935dc21668361cedb6
Signed-off-by: Zaphod <mwilson@acesappraisal.com>
transparency

Change-Id: Ic4bee9a0d1b30904d29a6b1119d7ce622b7fb784
Merge branch 'cm-10.1' of github.com:DerTeufel/android_packages_apps_Phone into cm-10.1