Add viper.common.constants.py
Add viper.common.constants.py

Includes constant VIPER_ROOT.

S2R2/viper,cwtaylor/viper,MeteorAdminz/viper,Beercow/viper,postfix/viper-1,Beercow/viper,jahrome/viper,kevthehermit/viper,MeteorAdminz/viper,S2R2/viper,jahrome/viper,jack51706/viper,Beercow/viper,postfix/viper-1,cwtaylor/viper,jack51706/viper,kevthehermit/viper