Move installation of jack_control to dbus integration

dbus/wscript:
Install `jack_control` script if building/installing jackdbus.

tools/wscript:
Remove (unconditional) installation of `jack_control` script.

dbus/wscript

@@ -89,3 +89,6 @@ def build(bld):
             target = 'org.jackaudio.service',
             install_path = '${DBUS_SERVICES_DIR}/',
             BINDIR = bld.env['PREFIX'] + '/bin')
+
+    if not bld.env['IS_WINDOWS']:
+        bld.install_files('${PREFIX}/bin', 'jack_control', chmod=0o755)

tools/wscript

@@ -114,4 +114,3 @@ def build(bld):
 
     if not bld.env['IS_WINDOWS']:
         bld.symlink_as('${PREFIX}/bin/jack_disconnect', 'jack_connect')
-        bld.install_files('${PREFIX}/bin', 'jack_control', chmod=0o755)