Add python 2.7.5
Build instructions:
export NDK=your-AOSP-path/ndk
cd $NDK ; ./build/tools/dev-cleanup.sh
./build/tools/download-toolchain-sources.sh /tmp/ndk-$USER/src
./build/tools/build-host-python.sh --toolchain-src-dir=/tmp/ndk-$USER/src
--systems=darwin-x86_64 --force
cp -a $NDK/prebuilt/darwin-x86_64/* .
Change-Id: Ib61526cc7a319cd2b182decaa223b69d74534041