The new names are hopefully more descriptive and consistent. If you feel you
don't agree with this change, *please* read issue 17741 first - there's a lot of
discussion in there.

runner were run in an environment where the process inherited an ignore
setting for SIGINT.  Restore the SIGINT handler to the desired
KeyboardInterrupt raising one during that test.

runner were run in an environment where the process inherited an ignore
setting for SIGINT.  Restore the SIGINT handler to the desired
KeyboardInterrupt raising one during that test.

sizes.

sizes.

parsing.  Added more tests for regrtest's argument parsing.

in docstrings and comments.

in docstrings and comments.

Use less code by moving many of the steps from the initial
lookup into the main search loop.

Beautify the code but keep the overall logic unchanged.

decorators of test.support, run the test if the platform matchs!

test.support, run the test if the platform matchs!

Use also os.get_inheritable() instead of fcntl() to check the inheritable flag
(FD_CLOEXEC).

descriptor

Fix compilation warnings on Windows (Visual C++) like: "_sre.c(3121): warning
C4018: '>' : signed/unsigned mismatch".

_validate_outer() ensures that groups >= 0, so _validate_inner() can cast
groups to size_t.

'long', possible loss of data" in delta_new(), use an explicit cast from double
to long

PATH_MAX is not available on "MIPS IRIX 6.5.30 [SB] 3.x" buildbot

are now created non-inheritable; add functions os.get/set_inheritable(),
os.get/set_handle_inheritable() and socket.socket.get/set_inheritable().

error messages and comments.

error messages and comments.