Move JobPool onto job01::obj instead of job01::mem::block.
Oops, I didn't have gyp set up to properly define DEBUG for xcode Debug
builds.  As a result SCHWASSERT wasn't being called when I thought it was.
Luckily, this resulted in very little undetected breakage.
Use uniform naming for job01 test executables.
Remove job01::mem:blocks.h and friends... these are superceded by job01::obj.