Update submodules: plugins (new commits)

plugins:
    ec7ff19 Chris Smith <chris@dmdirc.com>
            Fix some oddness.

            Gerrit: http://gerrit.dmdirc.com/3683

Change-Id: I69acaaae26f1904ece130b3c72969ac52e5c4d40

modules/plugins

@@ -1 +1 @@
-Subproject commit ca6134670bdf53933cf76f0689edf98eb66e1798
+Subproject commit ec7ff19cfc4c927201ce078884d9af325a60ae49