Avoid memory leaks when handling metadata strings

Don't duplicate strings when retrieveing metadata from media
files. As any requests for metadata strings would pass through
the binder, this would cause the reference to the duplicate string
to be lost, causing a memory leak as the duplicate would not be
freed.

Change-Id: I2593733472b1bb589bc502b2c11080f581015bb5
camera: add ISO3200 and ISO6400

This change adds camera ISO 3200 and 6400, needed by some camera hal.

Change-Id: I65172a7de6554c3c288f0a4153d3fcb432b70db8
Merge "Avoid memory leaks when handling metadata strings" into jellybean
Merge "camera: add ISO3200 and ISO6400" into jellybean
camera: improve power mode support

This change improves the power mode support introduced in commit
eb01ea6cef737964a31ccad2506ae64c877e6223.

The power mode it's not exclusive of Sony phones.

Based on commit 7036d66bec7697160ba1b2e255f1e7fae0c8c435 from CAF,
branch ics_chocolate.

Change-Id: I652d63c33db9a8da4a9f8f613be12877d032de37
stagefright: add support for samsung proprietary omx

Change-Id: Iab0d014c3c237871e46135aecbbcea99a58f87e7
Merge remote-tracking branch 'cm/jellybean' into v880-jb