test/run-in-tree.sh: Search session.conf in test directory
test/run-in-tree.sh: Search session.conf in test directory

Allow users to call test/run-in-tree.sh from any directory, so that you can e.
g. run "test/run-in-tree.sh gvfs-mount -li". Without this, run-in-tree.sh only
finds its session.conf when running this in the tests/ directory.

gicmo/gvfs,xkahn/gvfs-cmis,gicmo/gvfs,xkahn/gvfs-cmis,xkahn/gvfs-cmis,halfline/gvfs,gicmo/gvfs,halfline/gvfs,halfline/gvfs,gicmo/gvfs,xkahn/gvfs-cmis