Add missing ints in old-style function definitions, to avoid build
failures with a strict(er) C99 compilers.

The change to tiffIdent actually fixes a pointer clipping bug
because the missing types are not ints.

There's also a #include <stdlib.h>, needed for calling the exit function.

diff --git a/faces.c b/faces.c
index 3a2900e9a0030721..50c1077fa3456afd 100644
--- a/faces.c
+++ b/faces.c
@@ -85,6 +85,7 @@ static int nextInt(zf, len)
 
 Image *facesLoad(fullname, name, verbose)
      char *fullname, *name;
+     int verbose;
 { ZFILE        *zf;
   Image        *image;
   char          fname[BUFSIZ];
diff --git a/options.c b/options.c
index 2fea7c5c1bd77d34..5edb2d29a086bddd 100644
--- a/options.c
+++ b/options.c
@@ -425,6 +425,7 @@ static int getInteger(type, s)
 }
 
 static float getFloat(type, s)
+     int type;
      char *s;
 {
   float ret;
diff --git a/rlelib.c b/rlelib.c
index e729f6bddf08da20..0265c46c3ae888d7 100644
--- a/rlelib.c
+++ b/rlelib.c
@@ -424,6 +424,7 @@ register struct sv_globals * globals;
  */
 void
 RunSkipBlankLines(nblank, globals)
+int nblank;
 register struct sv_globals * globals;
 {
 }
@@ -435,6 +436,7 @@ register struct sv_globals * globals;
  */
 void
 RunSetColor(c, globals)
+int c;
 register struct sv_globals * globals;
 {
 }
@@ -447,6 +449,7 @@ register struct sv_globals * globals;
 /* ARGSUSED */
 void
 RunSkipPixels(nskip, last, wasrun, globals)
+int nskip, last, wasrun;
 register struct sv_globals * globals;
 {
 }
@@ -458,6 +461,7 @@ register struct sv_globals * globals;
  */
 void
 RunNewScanLine(flag, globals)
+int flag;
 register struct sv_globals * globals;
 {
 }
@@ -469,6 +473,7 @@ register struct sv_globals * globals;
 void
 Runputdata(buf, n, globals)
 rle_pixel * buf;
+int n;
 register struct sv_globals * globals;
 {
 }
@@ -481,6 +486,7 @@ register struct sv_globals * globals;
 /* ARGSUSED */
 void
 Runputrun(color, n, last, globals)
+int color, n, last;
 register struct sv_globals * globals;
 {
 }
@@ -1387,6 +1393,7 @@ int dith_size = 16;
  */
 void
 dithermap( levels, gamma, rgbmap, divN, modN, magic )
+int levels;
 double gamma;
 int rgbmap[][3];
 int divN[256];
@@ -1447,6 +1454,7 @@ int magic[16][16];
  */
 void
 bwdithermap( levels, gamma, bwmap, divN, modN, magic )
+int levels;
 double gamma;
 int bwmap[];
 int divN[256];
@@ -1670,6 +1678,7 @@ int gammamap[256];
  * 	see "Note:" in dithermap comment.
  */
 int dithergb( x, y, r, g, b, levels, divN, modN, magic )
+int x, y, r, g, b, levels;
 int divN[256];
 int modN[256];
 int magic[16][16];
@@ -1700,6 +1709,7 @@ int magic[16][16];
  * 	see "Note:" in bwdithermap comment.
  */
 int ditherbw( x, y, val, divN, modN, magic )
+int x, y, val;
 int divN[256];
 int modN[256];
 int magic[16][16];
diff --git a/smooth.c b/smooth.c
index c61085b4df73a4f8..f11c682223739917 100644
--- a/smooth.c
+++ b/smooth.c
@@ -74,6 +74,7 @@ static Image *doSmooth(image)
 
 Image *smooth(image, iterations, verbose)
      Image *image;
+     int iterations;
      unsigned int verbose;
 { int a;
   Image *old, *new;
diff --git a/tiff.c b/tiff.c
index 4c5649c91fb37d5c..b5e4722787440c83 100644
--- a/tiff.c
+++ b/tiff.c
@@ -223,6 +223,8 @@ static void babble(name, info)
 }
 
 int tiffIdent(fullname, name)
+char *fullname;
+char *name;
 {
   TIFF *tiff;
   struct tiff_info info;
diff --git a/uufilter.c b/uufilter.c
index 72e20b200e9a06d7..e2b951602343efce 100644
--- a/uufilter.c
+++ b/uufilter.c
@@ -11,6 +11,7 @@
  */
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
 int main(argc, argv)
diff --git a/xloadimage.c b/xloadimage.c
index cbb44d1d1e2a179c..938137aaa4269789 100644
--- a/xloadimage.c
+++ b/xloadimage.c
@@ -46,6 +46,7 @@ static byte root_weave_bits[] = {
 static Image *doProcessOnImage(image, option, verbose)
      Image *image;
      Option *option;
+     int verbose;
 { Image  *retimage= image;
   XColor  xcolor; /* color for foreground/background */