Keep patterns statically compiled for efficiency
Better separation of server components and undefined config subs

Fixes issue 3961

Change-Id: Ib500352d03ba42400242002822908a1957003089
Reviewed-on: http://gerrit.dmdirc.com/1067
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Gregory Holmes <greg@dmdirc.com>

Squashed commit of the following:

commit 81c3cb41fe
Author: Chris Smith <chris@dmdirc.com>
Date:   Sun Feb 28 21:13:03 2010 +0000

    Fix a couple of escaping edge cases

    Change-Id: I8cd9c3493a932039b7bae704c522f79778946d55

commit cde2d943dc
Author: Chris Smith <chris@dmdirc.com>
Date:   Thu Feb 25 05:51:38 2010 +0000

    Working actions substitutor replacement

    Fixes issue 3804

    Change-Id: Id714c47d599815461826f403942bfe490ac587ff

commit f450ce592a
Author: Chris Smith <chris@dmdirc.com>
Date:   Thu Feb 25 00:01:55 2010 +0000

    Support for config and server substitutions

    Change-Id: I0b10332f340212d05ac478d4025ee557d2e66351

commit 4d2357a28f
Author: Chris Smith <chris@dmdirc.com>
Date:   Tue Feb 23 21:41:54 2010 +0000

    Implement word and component substitutions

    Change-Id: I120f50e6eec3dc968beff42d79c0171a5908155e

commit 0bb9fbb970
Author: Chris Smith <chris@dmdirc.com>
Date:   Mon Jan 25 21:32:00 2010 +0000

    Unit test for actions substitutor

Change-Id: I4d8b2084f7b78cf2b30f0409e1a7fdfe5a9ee5aa
Reviewed-on: http://gerrit.dmdirc.com/927
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Gregory Holmes <greg@dmdirc.com>