tree e966c800213a5a691af2b947b086903f0f6c67e6
parent 6e1d3c1c855818a6d1399698572afae0d11b872b
author Fam Zheng <famz@redhat.com> 1397804136 +0800
committer Michael Tokarev <mjt@tls.msk.ru> 1398589458 +0400

configure: Improve help behavior

Old:
There are two paths to show help and exit 1, one is with "-h" or
"--help", one is with invalid options.

New:
Show help and exit 0 for --help.
On invalid option, don't show the long help and bury the early "ERROR:"
line, just give a message pointing to --help.

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>