Add forward declarations.

--- fasthenry-3.0/src/fasthenry/sparse/spFactor.c.orig	2015-07-22 10:37:04.934043468 +0200
+++ fasthenry-3.0/src/fasthenry/sparse/spFactor.c	2015-07-22 12:52:55.515636802 +0200
@@ -105,7 +105,29 @@
 #include "spDefs.h"
 
 
-
+static int FactorComplexMatrix( MatrixPtr );
+static CreateInternalVectors( MatrixPtr );
+static CountMarkowitz( MatrixPtr, register RealVector, int );
+static MarkowitzProducts( MatrixPtr, int );
+static ElementPtr SearchForPivot( MatrixPtr, int, int );
+static ElementPtr SearchForSingleton( MatrixPtr, int );
+static ElementPtr QuicklySearchDiagonal( MatrixPtr, int );
+static ElementPtr SearchDiagonal( MatrixPtr, register int );
+static ElementPtr SearchEntireMatrix( MatrixPtr, int );
+static RealNumber FindLargestInCol( register  ElementPtr );
+static RealNumber FindBiggestInColExclude( MatrixPtr, register  ElementPtr,
+                                           register  int );
+static ExchangeRowsAndCols( MatrixPtr, ElementPtr, register int );
+static ExchangeColElements( MatrixPtr, int, register  ElementPtr,
+                            int, register  ElementPtr, int );
+static ExchangeRowElements( MatrixPtr, int, register ElementPtr,
+                            int, register ElementPtr, int );
+static RealRowColElimination( MatrixPtr, register  ElementPtr );
+static ComplexRowColElimination( MatrixPtr, register  ElementPtr );
+static UpdateMarkowitzNumbers( MatrixPtr, ElementPtr );
+static ElementPtr CreateFillin( MatrixPtr, register int, int );
+static int MatrixIsSingular( MatrixPtr, int );
+static int ZeroPivot( MatrixPtr, int );
 
 
 
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 +0100'>2017-12-12</span></td><td><a href='/guix/commit/gnu/packages/xfig.scm?id=a7ebe9dc39450efef2543ff7315c69811f9fa6f4'>gnu: xfig: Update to 3.2.6a.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2017-12-12 05:12:14 +0100'>2017-12-12</span></td><td><a href='/guix/commit/gnu/packages/xfig.scm?id=6e119bad60b3c1aa3b13f5b6d7e8c2987d3453d0'>gnu: xfig, transfig: Update home pages.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2017-12-02 15:06:02 +0100'>2017-12-02</span></td><td><a href='/guix/commit/gnu/packages/xfig.scm?id=63b31b567e4716e6dacb764847f5cdebcb9ed8e5'>gnu: xfig: Don't ignore 'xmkmf' exit code.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-09-20 20:58:04 -0400'>2017-09-20</span></td><td><a href='/guix/commit/gnu/packages/xfig.scm?id=dc1d3cdef70f0e3c047c229c2a0e561d1f47bde8'>gnu: Use 'modify-phases' syntax.</a><span class='msg-avail'>...</span></td><td>Kei Kebreau</td></tr>
<tr><td><span title='2017-01-13 07:28:57 +0100'>2017-01-13</span></td><td><a href='/guix/commit/gnu/packages/xfig.scm?id=79728b621bb3032984252c244b710993ae1aa984'>gnu: xfig: Correct typographic error.</a><span class='msg-avail'>...</span></td><td>John Darrington</td></tr>
<tr><td><span title='2017-01-12 17:41:06 +0100'>2017-01-12</span></td><td><a href='/guix/commit/gnu/packages/xfig.scm?id=97fedab17d4acfa05969ddd9faf98a11d27a4743'>gnu: xfig: Remove wrapper and clean up implementation.</a><span class='msg-avail'>...</span></td><td>John Darrington</td></tr>
<tr><td><span title='2017-01-12 17:41:00 +0100'>2017-01-12</span></td><td><a href='/guix/commit/gnu/packages/xfig.scm?id=0eefac0f2f2c7b57471d352abfad7fa306a69df2'>gnu: xfig: Use modify-phases.</a><span class='msg-avail'>...</span></td><td>John Darrington</td></tr>