Fix dist
White space nit
Fix printf format nit.

Fixes #1429
Always nuke the IMS-candidate object if we successfully IMS fetch it.
Remove a noise debug vsl
Make sure the thread pool herders wake up every so often so they
notice if the params have changed.
Make this work with bsd make as well

Avoid using gnu make specific rules. While here sort entries and add
missing dep for varnishd.
Fix varnishlog option doc typo.
Move the closing of VDI connection to also cover successful IMS fetches.

Spotted by:	scoof