Reorganizing btest/policy directory to match new scripts/ organization

Addresses #545

testing/btest/scripts/policy/misc/default-loaded-scripts.test

@@ -0,0 +1,12 @@
+# This test is meant to cover whether the set of scripts that get loaded by
+# default matches a baseline of known defaults.
+#
+# As the output has absolute paths in it, we need to remove the common
+# prefix to make the test work everywhere. That's what the sed magic
+# below does. Don't ask. :-)
+
+# @TEST-EXEC: bro misc/loaded-scripts
+# @TEST-EXEC: test -e loaded_scripts.log
+# @TEST-EXEC: cat loaded_scripts.log | awk 'NR>1{print $2}' | sed -e ':a' -e '$!N' -e 's/^\(.*\).*\n\1.*/\1/' -e 'ta' >prefix
+# @TEST-EXEC: cat loaded_scripts.log | sed "s#`cat prefix`##g" >canonified_loaded_scripts.log
+# @TEST-EXEC: btest-diff canonified_loaded_scripts.log