Clean up chase/spectator camera stuff.

o  Rename nq's cl_cam.c to cl_chase.c.
 o  Split out the chase cam stuff from qw's cl_cam.c to cl_chase.c

qw/include/chase.h

@@ -0,0 +1,37 @@
+/*
+	chase.h
+
+	@description@
+
+	Copyright (C) 1996-1997  Id Software, Inc.
+
+	This program is free software; you can redistribute it and/or
+	modify it under the terms of the GNU General Public License
+	as published by the Free Software Foundation; either version 2
+	of the License, or (at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+	See the GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, write to:
+
+		Free Software Foundation, Inc.
+		59 Temple Place - Suite 330
+		Boston, MA  02111-1307, USA
+
+*/
+
+#ifndef __chase_h
+#define __chase_h
+
+extern	struct cvar_s	*chase_active;
+
+void Chase_Init_Cvars (void);
+void Chase_Reset (void);
+void Chase_Update (void);
+
+#endif // __chase_h