[issue8560] regrtest: add a minimal "progress bar"

[STINNER Victor]

STINNER Victor <victor.stinner at haypocalc.com> added the comment:

Higher/lower bounds for me:
 - Quad core @ 2.5 GHz with -j4: 2 min 40 sec
 - Pentium4 @ 3 GHz (hyperthreading) without -j: 11 min 21 sec

Sometimes I forget to use -j, and sometimes I cannot use it (eg. see my last patches to support --without-threads ;-)).

When it takes more than 30 seconds, I would like a progress bar to estimate (myself) the remaing time :-)

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue8560>
_______________________________________