It was involving twisted conversion back and forth between
erp5.util.testbrowser which expected the URL and ERP5 site id whereas
erp5.util.benchmark which only expected the full URL.

Moreover, it was not working if there is no "real" ERP5 site ID, for example
with: http://foobar.org/.

Clear the Browser history (storing (request, response)) after each
suite. Moreover, it does make sense to keep it as suites are independent of
each other.

Before, if the first iteration failed, the whole execution failed even if the
number of maximum errors specified on the command line argument was not
reached, which was an issue especially when running with a range of users.

The results are now adjusted dynamically after the first successful iteration
rather than at the first iteration.

It should be set according the number of repeats and benchmark suites if the
number of errors is greater to report errors properly to the control process.

Using the same IP address may produce unrealistic results, thus allow to set
the source IP address (only meaningful when not using SlapOS). Network alias
interfaces must be set up before running the script.

rewrite integer check function to allow specifying a minimum value

for flushing the results

It is more consistent with existing naming within erp5.util and
zope.testbrowser parent module as well.

If  a test  suite  fails  with a  Zope  error, then  'main_form'  will not  be
available for the  next test suite. This also allows to  assume that each test
suite will be ran from ERP5 main page.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk/utils@46026 20353a03-c40f-0410-a6d1-a30d3c3de9de

away as it needs to send for example  the exit status over a pipe and also the
SIGCHLD was interrupting this pipe.

Moreover,  there  was a  race  condition in  the  previous  code leaving  some
children left in some cases because some SIGCHLD got lost.

Also, ignore further  SIGTERM once one has been received  to avoid receiving a
SIGTERM   before  putting   the   result  to   the   queue  and   interrupting
multiprocessing magic.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk/utils@46025 20353a03-c40f-0410-a6d1-a30d3c3de9de

exception object is serialized in order to be sent to the master process)

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properly flushed before exiting and terminate children properly.

Also, terminate children after a given number of errors (based upon a
patch from jm).

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