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='2021-04-16 14:39:48 +0300'>2021-04-16</span></td><td><a href='/guix/commit/gnu/packages/libevent.scm?id=fcc39864dba82e14895afbe841091091366c96bc'>Merge remote-tracking branch 'origin/master' into core-updates</a><span class='msg-avail'>...<span class='msg-tooltip'> Conflicts:
	gnu/local.mk
	gnu/packages/boost.scm
	gnu/packages/chez.scm
	gnu/packages/compression.scm
	gnu/packages/crates-io.scm
	gnu/packages/docbook.scm
	gnu/packages/engineering.scm
	gnu/packages/gcc.scm
	gnu/packages/gl.scm
	gnu/packages/gtk.scm
	gnu/packages/nettle.scm
	gnu/packages/python-check.scm
	gnu/packages/python-xyz.scm
	gnu/packages/radio.scm
	gnu/packages/rust.scm
	gnu/packages/sqlite.scm
	guix/build-system/node.scm
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2021-04-02 18:04:22 +0200'>2021-04-02</span></td><td><a href='/guix/commit/gnu/packages/libevent.scm?id=c39092c7b8cb6ba39efedae78a8356e2e4ad76ee'>gnu: Add libuv-for-node</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/libevent.scm (libuv-for-node): New variable.
</span></span></td><td>Jelle Licht</td></tr>
<tr><td><span title='2021-03-24 20:50:44 +0200'>2021-03-24</span></td><td><a href='/guix/commit/gnu/packages/libevent.scm?id=2aab587f842908a886e3bd08b028885dddd650e0'>Merge remote-tracking branch 'origin/master' into core-updates</a></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2021-03-17 23:10:19 +0100'>2021-03-17</span></td><td><a href='/guix/commit/gnu/packages/libevent.scm?id=ce10e2b3e93476a89cf85838fa21bb8b54268b1f'>gnu: Use autoconf instead of autoconf-wrapper when possible.</a><span class='msg-avail'>...<span class='msg-tooltip'>This should reduce confusion on when to use the "autoconf"
package and when to use "autoconf-wrapper" instead in
package definitions.

Fixes &lt;https://bugs.gnu.org/46564&gt;.

* gnu/packages/autotools.scm (autoconf-wrapper):
  advise to use the "autoconf" package instead where
  possible.
* gnu/packages/game-development.scm (tsukundere)[native-inputs]:
  use "autoconf" instead of "autoconf-wrapper".
* gnu/packages/gimp.scm
  (glimpse)[native-inputs]: likewise.
  (gimp-resynthesizer)[native-inputs]: add comment on why
  "autoconf-wrapper" is used.
* gnu/packages/gnunet.scm (gnunet)[native-inputs]:
  use "autoconf" instead of "autoconf-wrapper".
* gnu/packages/gnupg.scm (signing-party)[native-inputs]:
  add comment on why "autoconf-wrapper" is used.
* gnu/packages/guile-xyz.scm
  (guile-bash,guile-filesystem,guile-ics,guile-udev)[native-inputs]:
  use "autoconf" instead of "autoconf-wrapper".
* gnu/packages/libevent.scm (libuv)[native-inputs]: indicates
  "autoconf-wrapper" needs to be replaced with "autoconf"
  on core-updates.
* gnu/packages/logging.scm (glog)[native-inputs]: use "autoconf"
  instead of "autoconf-wrapper".
* gnu/packages/mail.scm (libetpan)[native-inputs]: likewise.
* gnu/packages/mate.scm
  (mate-icon-theme-faenza)[native-inputs]: add comment on why
  "autoconf-wrapper" is used.
  (mate-screensaver)[native-inputs]: use "autoconf" instead of
  "autoconf-wrapper".
* gnu/packages/package-management.scm (guix)[native-inputs]: likewise.
* gnu/packages/sawfish.scm (librep)[native-inputs]: likewise.
* gnu/packages/video.scm (motion)[native-inputs]: likewise.
* gnu/packages/zile.scm (zile)[native-inputs]: likewise.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Maxime Devos</td></tr>
<tr><td><span title='2020-10-06 13:49:52 +0200'>2020-10-06</span></td><td><a href='/guix/commit/gnu/packages/libevent.scm?id=0be0f249eb033507d254fb8d2c267f0f1e509b8c'>gnu: libevent: Fix build failure.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/libevent.scm (libevent)[arguments]&lt;#:configure-flags&gt;:
Add --disable-openssl.
</span></span></td><td>Danny Milosavljevic</td></tr>