[LTP] [PATCH] configure.ac: Fix --with* options

[Petr Vorel <pvorel@suse.cz>]

Hi Joerg,

> From: Joerg Vehlow <joerg.vehlow@aox-tech.de>

> The usage of AC_ARG_WITH was wrong. This resulted in unexpected configuration.
> E.g --without-bash set with_bash=yes and --with-nume set with_numa=no.
> This is fixed by using "$withval" in the action-if-given. Also all AC_ARG_WITH
> are unified now (all use alos action-if-not-given)

> The "default=" help text did not make sense for same options.
> e.g. for --with expect was "default=yes", but it defaults to no.
> The "default=" strings are dropped, because defaultness is indicated by
> either "--with-<option>" or "--without-<option>" as done by other projects,
> that use autoconf.

> Defining AC_ARG_WITH within an if to express dependencies does not work.
> ./configure --with-realtime-testsuite set with_realtime_testsuite=yes,
> even if with_bash=no or with_python=no. The check is removed completely.

> Signed-off-by: Joerg Vehlow <joerg.vehlow@aox-tech.de>
LGTM, but I'll have more deep look tomorrow.
FYI: https://github.com/linux-test-project/ltp/issues/508

Kind regards,
Petr