Log Message:
Import gimme-20151122, a tool for building packages in a chroot, into the
packages collection.

	Sometimes there's a need to just build a package without any of the
	installed pre-requisites being used. Or building a one-off package
	which can then be used elsewhere.

	This package helps to produce other binary packages, using pkg_comp to
	build them in a chroot.  The chroot is populated either by cloning the
	current operating system, or by using pre-existing binary sets.  As an
	example:

		# gimme -c vip

	will clone the current operating system on this host, and use it to
	make a chroot in which the sysutils/vip package will be built.

	Similarly, to build packages and all their pre-requisites afresh,
	something like

		# gimme -c mercurial git-base

	would be used.