also update ant build for library projects in external/
also update ant build for library projects in external/

n8fr8/ChatSecureAndroid,bonashen/ChatSecureAndroid,eighthave/ChatSecureAndroid,n8fr8/ChatSecureAndroid,maheshwarishivam/ChatSecureAndroid,eighthave/ChatSecureAndroid,OnlyInAmerica/ChatSecureAndroid,h2ri/ChatSecureAndroid,Heart2009/ChatSecureAndroid,h2ri/ChatSecureAndroid,anvayarai/my-ChatSecure,prive/prive-android,guardianproject/ChatSecureAndroid,31H0B1eV/ChatSecureAndroid,anvayarai/my-ChatSecure,joskarthic/chatsecure,maheshwarishivam/ChatSecureAndroid,prive/prive-android,10045125/ChatSecureAndroid,joskarthic/chatsecure,31H0B1eV/ChatSecureAndroid,h2ri/ChatSecureAndroid,kden/ChatSecureAndroid,guardianproject/ChatSecureAndroid,10045125/ChatSecureAndroid,Heart2009/ChatSecureAndroid,prembasumatary/ChatSecureAndroid,10045125/ChatSecureAndroid,OnlyInAmerica/ChatSecureAndroid,n8fr8/AwesomeApp,guardianproject/ChatSecureAndroid,n8fr8/ChatSecureAndroid,joskarthic/chatsecure,prembasumatary/ChatSecureAndroid,prive/prive-android,eighthave/ChatSecureAndroid,bonashen/ChatSecureAndroid,anvayarai/my-ChatSecure,n8fr8/AwesomeApp,kden/ChatSecureAndroid,Heart2009/ChatSecureAndroid,bonashen/ChatSecureAndroid,ChatSecure/ChatSecureAndroid,maheshwarishivam/ChatSecureAndroid,prive/prive-android,ChatSecure/ChatSecureAndroid,31H0B1eV/ChatSecureAndroid,n8fr8/AwesomeApp,OnlyInAmerica/ChatSecureAndroid,prembasumatary/ChatSecureAndroid,OnlyInAmerica/ChatSecureAndroid,ChatSecure/ChatSecureAndroid,ChatSecure/ChatSecureAndroid,kden/ChatSecureAndroid