Add forward declarations.

--- fastcap/src/mulSetup.c.orig	2015-07-22 13:55:21.592119775 +0200
+++ fastcap/src/mulSetup.c	2015-07-22 14:08:50.157688209 +0200
@@ -35,6 +35,14 @@
 
 #include "mulGlobal.h"
 
+static getnbrs(ssystem*);
+static linkcubes(ssystem*);
+static setMaxq(ssystem*);
+static getAllInter(ssystem*);
+static set_vector_masks(ssystem*);
+static indexkid(ssystem*, cube*, int*, int*);
+static int placeq(int, ssystem*, charge*);
+
 cube *cstack[1024];		/* Stack used in several routines. */
 
 /*
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<tr><td><span title='2019-08-07 15:27:09 -0400'>2019-08-07</span></td><td><a href='/guix/commit/gnu/tests/reconfigure.scm?id=ec12235ce207821027971c9d5f47b660b29f5ed5'>reconfigure: Improve tests for system activation.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/tests/reconfigure.scm (run-switch-to-system-test): Assert that
'/run/current-system' points to the activated system, and that new user
accounts specified in the operating system declaration are created.
</span></span></td><td>Jakob L. Kreuze</td></tr>
<tr><td><span title='2019-07-26 19:19:49 +0200'>2019-07-26</span></td><td><a href='/guix/commit/gnu/tests/reconfigure.scm?id=d23a00b599be56694065bd274184b9289fb8b85c'>tests: Add reconfigure system test.</a><span class='msg-avail'>...<span class='msg-tooltip'>[[PGP Signed Part:No public key for F506FD169D8FD95A created at 2019-07-24T18:35:10+0200 using RSA]]
* gnu/tests/reconfigure.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Jakob L. Kreuze</td></tr>