- Update to 3.17.7

Changes:
  * Use PM_SU_CMD for pkg set -o
- Fix plist issues
- Bump revision
- Fix build on head

Approved by:	portmgr (implicit)
Add debug output to staticFiltering unit test

Reviewed by:	bdrewery
Approved by:	bdrewery
Convert to USES=libtool.  Because the bundled libtool is too old to work
with devel/libltdl libtoolize and other autotools are needed.