2007-10-22 Marcus Brinkmann <marcus@g10code.de>

• exechelp.h (gpgex_spawn_detached): Change signature to just a

command line.

• exechelp.c: Rewritten.
• client.cc (replace_dollar_s): New function.

(default_uiserver_cmdline): Use it.
(uiserver_connect): Change caller of gpgex_spawn_detached.