Initial GalaxyParts implementation

Shared preference app for ARMv6 devices. Features:
 * Audio attenuation (disabled until supported by libaudio)
 * Samsung extamp filter (disabled until supported by libaudio)
 * Restart audio subsystem support (useful for applying
   changes to audio configuration)
 * Fake dual-touch (disabled)
 * Background process limit (remembers over reboots, unlike
   the same setting in Developer settings)
 * SD card read-ahead tweaking
 * Swap setting
 * Generate bug report feature
 * Several localizations included, contributed by many galaxy5 users
 * Supports overlay so that default features/values can be
   customized per-device.

Based on older Galaxy5Parts, mostly written by DSM_. Many thanks to
you and everyone who provided translations.

Change-Id: Id730f10196b6df17a7e8aff0b84e18b7805a3286
(cherry picked from commit da8ed4a5826019cc8efb9d720b189e736da1cf77)