Use new file names for included 386 files.

From-SVN: r2979

gcc/config/i386/isccoff.h

@@ -4,7 +4,7 @@
 
 /* Mostly it's like AT&T Unix System V. */
 
-#include "i386/svr3.h"
+#include "i386/sysv3.h"
 
 /* But with a few changes.  */
 #include "i386/isc.h"

gcc/config/i386/sco.h

@@ -3,7 +3,7 @@
 
 /* Mostly it's like AT&T Unix System V. */
 
-#include "i386/svr3.h"
+#include "i386/sysv3.h"
 
 /* By default, target has a 80387, uses IEEE compatible arithmetic,
    and returns float values in the 387, ie,

gcc/config/i386/xm-isc.h

 #define REAL_VALUE_ATOF(x) strtod ((x), (char **)0)
 extern double strtod ();
 
-#include "i386/xm-svr3.h"
+#include "i386/xm-sysv3.h"

gcc/config/i386/xm-sco.h

 /* Configuration for GCC for Intel i386 running SCO.  */
 
-#include "i386/xm-svr3.h"
+#include "i386/xm-sysv3.h"
 
 /* On SCO 3.2.1, ldexp rejects values outside [0.5, 1). */