unintentionally pkg.vars.config was in .gitignore, recovering

At b79d88596281513d658f4d pkg.var.config was put into .gitignore, this commit saves it from ignorance. What makes me wonder is why packaging system has been working correctly through several 1.4.x releases - probably `git archive` command let it resurrect in the archive. Whatever, without this file we can't add any commands in #826, #829 .