Get rid of malloc.h.

This is a non-POSIX/ISO-C header.  It is ok to include this on Linux, but it
is obsolete on BSD; FreeBSD even throws an error if you include it with
__STDC__ defined.  Every system should nowadays have malloc() defined in
stdlib.h.

Diff is largely mechanical, replacing malloc.h with stdlib.h where it is not
yet included anyway.

cde/programs/dthelp/parser/pass2/parser/actutil.c

@@ -31,7 +31,7 @@ This product and information is proprietary of Tandem Computers Incorporated.
 in the interface definition.*/
 
 #include <stdio.h>
-#include <malloc.h>
+#include <stdlib.h>
 #if defined(MSDOS)
 #include <process.h>
 #endif

cde/programs/dthelp/parser/pass2/parser/delfree.c

@@ -26,7 +26,7 @@
 /* Versions of m_free and m_malloc for debugging. */
 
 /**/
-#include <malloc.h>
+#include <stdlib.h>
 #include <stdio.h>
 #include "basic.h"
 #include "trie.h"

cde/programs/dthelp/parser/pass2/parser/entity.c

@@ -30,7 +30,7 @@ This product and information is proprietary of Tandem Computers Incorporated.
 /* Entity.c contains procedures pertaining to entities */
 
 #include <stdio.h>
-#include <malloc.h>
+#include <stdlib.h>
 #include <string.h>
 #if defined(MSDOS)
 #include <process.h>

cde/programs/dthelp/parser/pass2/parser/error.c

@@ -30,7 +30,7 @@ This product and information is proprietary of Tandem Computers Incorporated.
 /* Util.c contains general utilities for program PARSER */
 
 #include <stdio.h>
-#include <malloc.h>
+#include <stdlib.h>
 #include <string.h>
 #if defined(MSDOS)
 #include <process.h>

cde/programs/dthelp/parser/pass2/parser/param.c

@@ -31,7 +31,7 @@ This product and information is proprietary of Tandem Computers Incorporated.
 
 #include <string.h>
 #include <stdio.h>
-#include <malloc.h>
+#include <stdlib.h>
 #if defined(MSDOS)
 #include <process.h>
 #endif

cde/programs/dthelp/parser/pass2/parser/parser.c

@@ -25,7 +25,7 @@
 
 #include <string.h>
 #include <stdio.h>
-#include <malloc.h>
+#include <stdlib.h>
 #include "basic.h"
 #include "trie.h"
 #include "dtdext.h"

cde/programs/dthelp/parser/pass2/parser/parutil.c

@@ -31,7 +31,7 @@ This product and information is proprietary of Tandem Computers Incorporated.
 
 #include <string.h>
 #include <stdio.h>
-#include <malloc.h>
+#include <stdlib.h>
 #include <locale.h>
 #if defined(MSDOS)
 #include <process.h>

cde/programs/dthelp/parser/pass2/parser/scan.c

@@ -30,7 +30,7 @@ This product and information is proprietary of Tandem Computers Incorporated.
 /* Scan.c is the scanner for program PARSER */
 
 #include <string.h>
-#include <malloc.h>
+#include <stdlib.h>
 #include <stdio.h>
 #if defined(MSDOS)
 #include <process.h>

cde/programs/dthelp/parser/pass2/parser/struct.c

@@ -32,7 +32,7 @@ This product and information is proprietary of Tandem Computers Incorporated.
 
 #include <string.h>
 #include <stdio.h>
-#include <malloc.h>
+#include <stdlib.h>
 #if defined(MSDOS)
 #include <process.h>
 #endif