Update to 1.15.1917.102 from 1.15.1895.102

Changelog:
r373 2014-11-03 1.15.1917.102 - r353 2014-10-17 1.15.1896.102

You can check out Mozc r373 as follows.

gclient sync --revision=373

Summary of changes between 1.15.1896.102 (r353) and 1.15.1917.102 (r373).

    Build related changes:
        Android build is now tested with NDK r10c and OpenJDK 7
    Fixed issues:
        FIX: Warning message from keymap editor should be updated ( Issue 251 )
    Commit summary:
        r373: Remove Util:ToUTF8 since it is actually a dead code
        r372: Tidy up build_mozc.py
        r371: Unsupport BuildToolsMain in build_mozc.py except for Windows
        r370: Re-enable tests for SafeStrToDouble/SafeStrToFloat on Android
        r369: Use OpenJDK 7 to build Android binaries
        r368: Swith protobuf repository from Google Code to GitHub part2
        r367: Fix several coding style issues
        r366: Sort test cases alphabetically
        r365: Merge ANDROID_VERSION_CODE into BUILD
        r364: Replace scoped_ptr with std::unique_ptr under unix/
        r363: Stop generating xcode rule to run unittest from IDE
        r362: Fix style violations in header include guards part 3
        r361: Deprecate build fravor "Optimize"
        r360: Put mozc_build_tools under output directory
        r359: Fix indentation in a python script
        r358: Roll breakpad r1375:r1391
        r357: Swith protobuf repository from Google Code to GitHub
        r356: Show the warning message when and only when keymaps for DirectInput mode are changed
        r355: Stop using non-standard default constructor of std::istream
        r354: Fix style violations in header include guards part 2
        r353: Switch to Android NDK r10c
Remove a obsolete patch.
Update mozc packages to 1.15.1917.102