Merge "build failed with g++ v. 4.4.5 err msg:...

Merge "build failed with g++ v. 4.4.5 err msg: frameworks/base/media/libstagefright/MediaExtractor.cpp:62: error: invalid conversion from ‘const char*’ to ‘char*’ strrchr provides two prototypes. the one used returns const char* instead of char*"