Merge branch 'test-protocols' into testsuite-work

Merge branch 'test-protocols' into testsuite-work

* test-protocols:
  testsuite: use the new awk+shell TAP driver in our own testsuite
  tap/awk: handle non-zero exit status from the test command
  tap/awk: prepare to fetch the exit status of the test command
  tap/awk: refactor for future changes
  testsuite: avoid spurious failure if rst2html program is missing
  tap/awk: support Solaris /usr/xpg4/bin/awk
  tap/awk: support Solaris /usr/bin/nawk
  tap/awk: correctly extract message from SKIP plans
  tap/awk: support colorized output
  tap: real (but still incomplete) awk implementation of TAP driver
  testsuite: fix spurious failure due to Solaris 'wc' incompatibility
  coverage: keyword "SKIP" in TAP plan is case-insensitive
  coverage: ambiguous use of TAP "TODO"/"SKIP" directives
  coverage: non-directive comments in TAP results are preserved
  coverage: TAP result number followed by non-whitespace word boundary
  coverage: a TAP result numbered "0" is always out-of-order
  cosmetics: fix botched indentation in perl TAP driver
  fix: regenerate tests/Makefile.in
  coverage: some more tests on corner cases of TAP support