Update submodules: parser (new commits)

parser:
    c649984 Chris Smith <chris@dmdirc.com>
            Split into two proper projects.

            Gerrit: http://gerrit.dmdirc.com/4057

Change-Id: I1ecc09ccdc36b75f9584dce4a3fd9ef3c684ba69

modules/parser

@@ -1 +1 @@
-Subproject commit dcbe675c0f0ccc68b3b21124f9fec474cc9fd39a
+Subproject commit c64998498c6a1604903a60f855d0396913d6625f