default version: '5.0.0_r1 -> 5.0.1_r1'

Change-Id: I460cac246232801dfe9930d786e5f8dfc3315f9d
add Cygn's 'external/google'

needed to build some cygn developed applications

Change-Id: I4be1628219864fc3366e962f7bcce3143387dc75

(cherry picked from commit 53cbbdada7163c986e2b5178d00142a3a6596143)
Update manifest
Remove unused stuff