Add external storage capability

Change-Id: I600d82528de2ef8192967d3802cdab3012840c30

Conflicts:
	res/xml/video_preferences.xml
	src/com/android/camera/CameraSettings.java
	src/com/android/camera/VideoController.java

Conflicts:
	res/xml/video_preferences.xml
	src/com/android/camera/PhotoModule.java
	src/com/android/camera/VideoController.java
	src/com/android/camera/VideoModule.java
Fix Camera screen nail for external

Change-Id: I1a375c84734ca4a26f1ef204636a04aa7373f7bd

Conflicts:
	src/com/android/camera/PhotoModule.java
Fix External storage detection

Change-Id: I0ef995bb664d5f3f782216eb78f19e988ce056d6
Fix Camcorder screen nail for external

Change-Id: I05872a860ae5cfcb2baf480c2f866bd3df977086
fix external storage typo (my typo)

Change-Id: Ib8128e1a5067b6e7f894a9f4f2e57ea0fa8834f0