* tools/dbus-send.c: Don't exit with an error code if --help was
passed. Default to using the session bus instead of the system
one.
* tools/dbus-launch.c: Ditto.
* tools/dbus-monitor.c: Ditto.
* tools/dbus-send.1: Update with new arguments.
* tools/dbus-launch.c: Emit code to export variables. New
arguments -s and -c to specify shell syntax, and a bit of code to
autodetect syntax. Also, allow specifying a program to run.
* tools/dbus-launch.1: Update with new arguments.
* tools/dbus-send.1: Ditto.
* tools/dbus-monitor.1: Ditto.
* tools/dbus-monitor.c: Add --session argument and usage()
function.
* tools/dbus-monitor.1: Update with new --session arg.
* bus/Makefile.am (install-data-hook): Create
$(libdir)/dbus-1.0/services so that the session bus is happy.
