Power Menu: Add Screen record Option:

Based on OmniRom:

https://github.com/omnirom/android_frameworks_base/commit/a49cd86c18d389d7c6ab31ae0c448689cf3f422e

Conflicts:

core/java/android/provider/Settings.java
core/res/res/values/strings.xml
policy/src/com/android/internal/policy/impl/GlobalActions.java