Bug 835345 - Preloaded contacts for carriers during build time

Modified Makefile and Android.mk to generate the contacts DB according to the JSON placed at build folder.

An example of the JSON file can be found in bugzilla

https://bugzilla.mozilla.org/show_bug.cgi?id=835345

To generate a build with the preloaded contacts the variable TARGET_WITH_CONTACTS must be defined when building