* TT_RETRIABLE:
Mark a lot of flacky tests with TT_RETRIABLE (for linux/win32 only)
regress: introduce TT_RETRIABLE
Fixes: #704
(cherry picked from commit 4d2f013b5d20e674b22e5a8244f7fa63172dbdbf)
The big win here is that we can get process-level isolation.
This has been tested to work okay on at least Linux and Win32. Only
the tests in regress.c have been converted wrapped in the new wrapper
functions; the others are still on the old system.
svn:r1073