longer split per directory, but in chunks of 100 tests (configurable via
the new CHUNKSIZE=xxx Makefile parameter), which then all can be checked
in parallel
o dependencies between tests are handled by always putting tests whose
name is the same except for the last character into the same chunk
o as previously, -jx can only be used for the "all" target, other targets
cannot be executed in parallel
o the "units" directory has been renamed "tstunits" because otherwise
"make distclean" will remove it entirely now that the main tests
makefile also compiles a program
git-svn-id: trunk@21479 -