debug: convert K&R function definitions to ANSI C

Convert the old-style (K&R) function definitions in debug/ to ANSI C
prototypes, formatted in the project's convention: the return type on its
own line and each parameter on its own line, indented four spaces, with
the original parameter comments retained.

Corrects the HistCreate / HistAdd declarations in debug.h to use bool
for the ptrKeys parameter, matching their definitions.

Builds cleanly under GCC 16 / C23 (with the -std=gnu17 build change).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

debug/debug.h

@@ -68,8 +68,8 @@ extern struct debugClient debugClients[];
 #define	DebugIsSet(cid, f)	debugClients[(spointertype) cid].dc_flags[f].df_value
 
 /* procedures */
-extern void HistCreate(const char *name, int ptrKeys, int low, int step, int bins);
+extern void HistCreate(const char *name, bool ptrKeys, int low, int step, int bins);
-extern void HistAdd(const char *name, int ptrKeys, int value);
+extern void HistAdd(const char *name, bool ptrKeys, int value);
 extern void HistPrint(const char *name);
 extern ClientData DebugAddClient(const char *name, int maxflags);
 extern int DebugAddFlag(ClientData clientID, const char *name);

debug/debugFlags.c

@@ -56,9 +56,9 @@ int debugNumClients = 0;
  */
 
 ClientData
-DebugAddClient(name, maxflags)
+DebugAddClient(
-    const char *name;
+    const char *name,
-    int maxflags;
+    int maxflags)
 {
     struct debugClient *dc;
 
@@ -112,9 +112,9 @@ DebugAddClient(name, maxflags)
  */
 
 int
-DebugAddFlag(clientID, name)
+DebugAddFlag(
-    ClientData clientID;	/* Client identifier from DebugAddClient */
+    ClientData clientID,	/* Client identifier from DebugAddClient */
-    const char *name;		/* Name of debugging flag */
+    const char *name)		/* Name of debugging flag */
 {
     int id = (int) CD2INT(clientID);
     struct debugClient *dc;
@@ -156,8 +156,8 @@ DebugAddFlag(clientID, name)
  */
 
 void
-DebugShow(clientID)
+DebugShow(
-    ClientData clientID;
+    ClientData clientID)
 {
     int id = (int) CD2INT(clientID);
     struct debugClient *dc;
@@ -195,11 +195,11 @@ DebugShow(clientID)
  */
 
 void
-DebugSet(clientID, argc, argv, value)
+DebugSet(
-    ClientData clientID;
+    ClientData clientID,
-    int argc;
+    int argc,
-    char *argv[];
+    char *argv[],
-    bool value;
+    int value)
 {
     bool badFlag = FALSE;
     int id = (int) CD2INT(clientID);

debug/hist.c

@@ -50,9 +50,9 @@ Histogram * hist_list = (Histogram *) NULL;
  * ----------------------------------------------------------------------------
  */
 Histogram *
-histFind(name, ptrKeys)
+histFind(
-    const char * name;
+    const char * name,
-    bool ptrKeys;
+    bool ptrKeys)
 {
     Histogram * h;
     for(h=hist_list; h!=(Histogram *) NULL; h=h->hi_next)
@@ -81,12 +81,12 @@ histFind(name, ptrKeys)
  * ----------------------------------------------------------------------------
  */
 void
-HistCreate(name, ptrKeys, low, step, bins)
+HistCreate(
-    const char * name;	/* Name for histogram add and print   */
+    const char * name,	/* Name for histogram add and print   */
-    bool   ptrKeys;	/* TRUE if name is a character pointer*/
+    bool   ptrKeys,	/* TRUE if name is a character pointer*/
-    int    low;		/* The lowest value for the histogram */
+    int    low,		/* The lowest value for the histogram */
-    int    step;	/* The increment for each bin         */
+    int    step,	/* The increment for each bin         */
-    int    bins;	/* The numbe of bins in the histogram */
+    int    bins)	/* The numbe of bins in the histogram */
 {
     Histogram * new;
     int i;
@@ -134,10 +134,10 @@ HistCreate(name, ptrKeys, low, step, bins)
  * ----------------------------------------------------------------------------
  */
 void
-HistAdd(name, ptrKeys, value)
+HistAdd(
-    const char * name;	/* Identifier for the histogram */
+    const char * name,	/* Identifier for the histogram */
-    bool   ptrKeys;	/* TRUE if the name is a pointer*/
+    bool   ptrKeys,	/* TRUE if the name is a pointer*/
-    int    value;	/* Value to index the column	*/
+    int    value)	/* Value to index the column	*/
 {
     Histogram * h;
 
@@ -176,8 +176,8 @@ HistAdd(name, ptrKeys, value)
  * ----------------------------------------------------------------------------
  */
 void
-HistPrint(name)
+HistPrint(
-    const char * name;
+    const char * name)
 {
     FILE * fp, * fopen();
     Histogram * h;