exynos4: hal: include: Exif.h: always keep two decimal places in macros

The APEX macros always rounded to int, losing too much precision. Ensure
that we always keep at least two decimal digits.

The more precise F-number comes from the value recorded by the camera
closed source driver.

Added a new macro APEX_SHUTTER_TO_EXPOSURE(x) (credit to tryptophane).

Change-Id: Ief43c15c6517d8dc48d4d4bc9e93df9eb01e6b91
Fix macloader buffer overflow

Fixes this log entries.

I/macloader( 1915): Writing murata to /data/.cid.info
D/macloader( 1915): Setting permissions on /data/.cid.info
F/libc    ( 1915): *** vsprintf buffer overflow detected ***
F/libc    ( 1915): Fatal signal 11 (SIGSEGV) at 0xdeadbaad (code=1), thread 1915 (macloader)

Change-Id: I1ccb257bada18030de76a2be40477172993ca2a0
Merge remote-tracking branch 'upstream/cm-10.1' into phablet-10.1