sysutils/condor: update 8.2.6 -> 8.2.8

Update to latest stable release, canonicalize patch filenames, eliminate
GCC dependency and MAKE_JOBS_UNSAFE, replace files/condor_config.in with
version-specific example file provided in the dist, move sample files to
etc/*.sample, improvements to condor_config.local.sample and
condor-config script, make rc script more reliable by replacing fixed
sleep delays with more intelligent wait loops.

PR: 200713
Submitted by: jwbacon@tds.net (maintainer)