Implement the --select option in konqueror again, using Peter's nice work in Dolphin.

Implement the --select option in konqueror again, using Peter's nice work in Dolphin.

While at it, I reworked the handling of command-line options in main completely,
to factorize code and make --select do the right thing even in case of multiple args
(wasn't supported in kde3).

svn path=/trunk/KDE/kdebase/apps/; revision=1081246