gpgconf: Allow "all" for --launch, --kill, and --reload.
* tools/gpgconf-comp.c (gc_component_launch): Allow -1 for COMPONENT. (gc_component_kill): Ditto. (gc_component_reload): For robustness change the condition to < 0. * tools/gpgconf.c (main) <aLaunch, aKill, aReload>: Support argument "all".
- Signed-off-by: Werner Koch <wk@gnupg.org>