QA output created by 013
For PCP 1.1 Expect cannot open archive error message, and no core file ...
For PCP 2.0 -l tmparch/foo.meta is a synonym for -l src/foo, so this works ...

=== tmparch/foo.meta: exists ===
Log Label (Log Format Version 2)
Performance metrics from host HOST
  commencing DATE
  ending     DATE
[filtered and sorted stderr]
__pmLogChangeVol: change to volume 0
__pmLogOpen: inspect file "tmparch/foo.0"
__pmLogOpen: inspect file "tmparch/foo.index"
__pmLogOpen: inspect file "tmparch/foo.meta"

=== /tmp/fungus: exists ===
[filtered and sorted stderr]
__pmLogOpen: Not found: data file "fungus.0" (or similar)
__pmLogOpen: Not found: metadata file "fungus.meta"
pmdumplog: Cannot open archive "/tmp/fungus": No such file or directory

=== /tmp/bogus: does not exist ===
[filtered and sorted stderr]
__pmLogOpen: Not found: data file "bogus.0" (or similar)
__pmLogOpen: Not found: metadata file "bogus.meta"
__pmLogOpen: inspect file "/tmp/bogus.verylongsuffix"
pmdumplog: Cannot open archive "/tmp/bogus": No such file or directory
