Update several xp files
install.py: Add some packages
command.py: Add command for ip and REISUB
Add some tools in Linux
python: Change to use tool in share/linux instead of /workspace/tool
chrome-android: Support build of gms version

With new apktool for Android L, now we can repack gms version
(Chrome.apk + lib) to Google Play like one.
Put Chrome profile to /workspace/tool/chrome-android for better
maintenance. Adapt change in code accordingly.
chrome-android: Update README to add support of gms version
Add allocate_emory directory in android/ path.
It's used to take away a mount of memory from an android device to
observe what happens when running some cases on low-end android devices.
Merge pull request #25 from dbdxliudiwen/master

Add allocate_memory directory in android/ path.
chromium.py: Make chrome_android_apk global