Log Message:
pkgtools/packagekit: Fix permissions and directory creation

This package would fail when a non-privileged user would try to install it.
That's because it was trying to create /usr/pkg/var/log directory.  Another
directory was getting installed into DESTDIR but no further.

Added patch:
1) Removes attempt of Makefile to install ${VARBASE}/log
2) ..and directory ${VARBASE}/cache/PackageKit/downloads creation
3) ..which fixes non-root installations

The INSTALL file was removed, instead of installing directories in ${VARBASE},
it was installing directories at /.  The functionality was replaced with
OWN_DIRS+= in the Makefile and verified to work as expected.