Update TFkit to v0.0.4

utils/tfkit/runtests

 # ffoo test framework
 # See LICENSE file for copyright and license details.
 
-export TF_VERSION="0.0.3"
+export TF_VERSION="0.0.4"
 
 die() {
     echo "$@" && exit 9
 }
 
 export LC_ALL=C
-export TF_DIR=${TF_DIR:-tfkit}
+export TF_DIR=${TF_DIR:-$(dirname "$0")}
 export TF_SUITE="${TF_SUITE:-tests}"
 export TF_ARTIFACTS="${TF_ARTIFACTS:-tfkit-artifacts}"
 export TF_COLLECT="${TF_COLLECT:-auto}"