Fix the permission in common.ZipWriteStr().
Fix the permission in common.ZipWriteStr().

common.ZipWriteStr() should set a default file permission to 0o100644
instead of 0o644.

Change-Id: I8c89d8442b095b56ad3a0d47afdfa73ce55ad0c8

xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build