Add "_" builtin method for config generation

extract_opts.py fails to generate config without this

bug 1183731

Change-Id: Icf3b45d5d7262607336f5d5e7a0a14b0dee9741d
Imported Translations from Transifex

Change-Id: I468b17530bc8db03df53e8d098dfb5ea0765894e
Merge "Imported Translations from Transifex"
Merge "Add "_" builtin method for config generation"