more overlay bits

Although the overlay stuff is destined to be
removed someday, this patch just makes the
use of STATIC_DCL, STATIC_OVL consistent
in the trunk.

[As a side pointless experiment, I was able
 to build a working  8086 port of 3.4.2 after
 this change that worked correctly in limited
 testing right up until it came time to enter
 Ft. Ludios., where it couldn't allocated the
required amount of memory.]

src/dlb.c

@@ -11,6 +11,14 @@
 
 #define DATAPREFIX 4
 
+#if defined(OVERLAY)
+# define STATIC_DCL extern
+# define STATIC_OVL
+#else	/* !OVERLAY */
+# define STATIC_DCL static
+# define STATIC_OVL static
+#endif	/* OVERLAY */
+
 #ifdef DLB
 /*
  * Data librarian.  Present a STDIO-like interface to NetHack while
@@ -53,18 +61,18 @@ extern FILE *FDECL(fopen_datafile, (const char *,const char *,int));
 #define MAX_LIBS 4
 static library dlb_libs[MAX_LIBS];
 
-static boolean FDECL(readlibdir,(library *lp));
-static boolean FDECL(find_file,(const char *name, library **lib, long *startp,
+STATIC_DCL boolean FDECL(readlibdir,(library *lp));
+STATIC_DCL boolean FDECL(find_file,(const char *name, library **lib, long *startp,
 								long *sizep));
-static boolean NDECL(lib_dlb_init);
-static void NDECL(lib_dlb_cleanup);
-static boolean FDECL(lib_dlb_fopen,(dlb *, const char *, const char *));
-static int FDECL(lib_dlb_fclose,(dlb *));
-static int FDECL(lib_dlb_fread,(char *, int, int, dlb *));
-static int FDECL(lib_dlb_fseek,(dlb *, long, int));
-static char *FDECL(lib_dlb_fgets,(char *, int, dlb *));
-static int FDECL(lib_dlb_fgetc,(dlb *));
-static long FDECL(lib_dlb_ftell,(dlb *));
+STATIC_DCL boolean NDECL(lib_dlb_init);
+STATIC_DCL void NDECL(lib_dlb_cleanup);
+STATIC_DCL boolean FDECL(lib_dlb_fopen,(dlb *, const char *, const char *));
+STATIC_DCL int FDECL(lib_dlb_fclose,(dlb *));
+STATIC_DCL int FDECL(lib_dlb_fread,(char *, int, int, dlb *));
+STATIC_DCL int FDECL(lib_dlb_fseek,(dlb *, long, int));
+STATIC_DCL char *FDECL(lib_dlb_fgets,(char *, int, dlb *));
+STATIC_DCL int FDECL(lib_dlb_fgetc,(dlb *));
+STATIC_DCL long FDECL(lib_dlb_ftell,(dlb *));
 
 /* not static because shared with dlb_main.c */
 boolean FDECL(open_library,(const char *lib_name, library *lp));
@@ -117,7 +125,7 @@ extern char *FDECL(eos, (char *));
  *
  * Return TRUE on success, FALSE on failure.
  */
-static boolean
+STATIC_OVL boolean
 readlibdir(lp)
     library *lp;	/* library pointer to fill in */
 {
@@ -165,7 +173,7 @@ readlibdir(lp)
  * Look for the file in our directory structure.  Return 1 if successful,
  * 0 if not found.  Fill in the size and starting position.
  */
-static boolean
+STATIC_OVL boolean
 find_file(name, lib, startp, sizep)
     const char *name;
     library **lib;
@@ -228,7 +236,7 @@ close_library(lp)
  * Open the library file once using stdio.  Keep it open, but
  * keep track of the file position.
  */
-static boolean
+STATIC_OVL boolean
 lib_dlb_init()
 {
     /* zero out array */
@@ -245,7 +253,7 @@ lib_dlb_init()
     return TRUE;
 }
 
-static void
+STATIC_OVL void
 lib_dlb_cleanup()
 {
     int i;
@@ -255,7 +263,7 @@ lib_dlb_cleanup()
 	close_library(&dlb_libs[i]);
 }
 
-static boolean
+STATIC_OVL boolean
 lib_dlb_fopen(dp, name, mode)
     dlb *dp;
     const char *name, *mode;
@@ -275,7 +283,7 @@ lib_dlb_fopen(dp, name, mode)
     return FALSE;	/* failed */
 }
 
-static int
+STATIC_OVL int
 lib_dlb_fclose(dp)
     dlb *dp;
 {
@@ -283,7 +291,7 @@ lib_dlb_fclose(dp)
     return 0;
 }
 
-static int
+STATIC_OVL int
 lib_dlb_fread(buf, size, quan, dp)
     char *buf;
     int size, quan;
@@ -310,7 +318,7 @@ lib_dlb_fread(buf, size, quan, dp)
     return nread;
 }
 
-static int
+STATIC_OVL int
 lib_dlb_fseek(dp, pos, whence)
     dlb *dp;
     long pos;
@@ -330,7 +338,7 @@ lib_dlb_fseek(dp, pos, whence)
     return 0;
 }
 
-static char *
+STATIC_OVL char *
 lib_dlb_fgets(buf, len, dp)
     char *buf;
     int len;
@@ -362,7 +370,7 @@ lib_dlb_fgets(buf, len, dp)
     return buf;
 }
 
-static int
+STATIC_OVL int
 lib_dlb_fgetc(dp)
     dlb *dp;
 {
@@ -373,7 +381,7 @@ lib_dlb_fgetc(dp)
 }
 
 
-static long
+STATIC_OVL long
 lib_dlb_ftell(dp)
     dlb *dp;
 {