t/bugs-rt.t: Use a longer qualifier than simply PIDNO, mostly to help a user to cleanup files that may occur as a result of this call, and to make it less likely to find a collision even on systems with low values of PIDMAX
t/dump-file-utf8.t: Use a more unique name for the dumpfile, based on the test name and the pid, so that you could even run multiple copies of the same test without it being a likely problem. Also avoids a conflict with dump-file.t in parallel testing, which was doing IO to the same file, but with different data
t/dump-file.t: Use a more unique name for the dump-file , same rationale as dump-file-utf8.t
Changes: Document net effect of kentnl's tests patches
Merge pull request #15 from kentfredric/parallel-safe

Various Patches to make tests safe under parallel testing