de-printf the cache manager

de-printf the cache manager

put most printfs into either afs_warn or comment out entirely

move a couple uprintfs to afs_warnuser (and allow them to trigger on macos)

Change-Id: If67a09287fcfbe44cc76961dd59d2aad3299e887
Reviewed-on: http://gerrit.openafs.org/1501
Tested-by: Derrick Brashear <shadow@dementia.org>
Reviewed-by: Derrick Brashear <shadow@dementia.org>