docs, utils: Replace remaining C stdlib.h, stdint.h and math.h headers with C++ variants

Apply changes from commit c001070 ("Replace C stdlib.h, stdint.h
and math.h headers with C++ variants") to documentation and to create-module.py.

Author: a-andre

doc/manual/source/working-with-cmake.rst

@@ -2936,12 +2936,9 @@ followed by a header configuration:
   # Check for required headers and functions,
   # set flags on the right argument if header in the first argument is found
   # if they are not found, a warning is emitted
-  check_include_file_cxx("stdint.h" "HAVE_STDINT_H")
-  check_include_file_cxx("inttypes.h" "HAVE_INTTYPES_H")
   check_include_file_cxx("sys/types.h" "HAVE_SYS_TYPES_H")
   check_include_file_cxx("stat.h" "HAVE_SYS_STAT_H")
   check_include_file_cxx("dirent.h" "HAVE_DIRENT_H")
-  check_include_file_cxx("stdlib.h" "HAVE_STDLIB_H")
   check_include_file_cxx("signal.h" "HAVE_SIGNAL_H")
   check_include_file_cxx("netpacket/packet.h" "HAVE_PACKETH")
   check_function_exists("getenv" "HAVE_GETENV")
@@ -2970,13 +2967,9 @@ values are being used. So we need to check the template.
     #cmakedefine   INT64X64_USE_128
     #cmakedefine   INT64X64_USE_DOUBLE
     #cmakedefine   INT64X64_USE_CAIRO
-    #cmakedefine01 HAVE_STDINT_H
-    #cmakedefine01 HAVE_INTTYPES_H
-    #cmakedefine   HAVE_SYS_INT_TYPES_H
     #cmakedefine01 HAVE_SYS_TYPES_H
     #cmakedefine01 HAVE_SYS_STAT_H
     #cmakedefine01 HAVE_DIRENT_H
-    #cmakedefine01 HAVE_STDLIB_H
     #cmakedefine01 HAVE_GETENV
     #cmakedefine01 HAVE_SIGNAL_H
 
@@ -3300,12 +3293,12 @@ Compiler settings required by PCH and CCache are set in the PCH block in macros-
         <limits>
         <list>
         <map>
-        <math.h>
+        <cmath>
         <ostream>
         <set>
         <sstream>
-        <stdint.h>
-        <stdlib.h>
+        <cstdint>
+        <cstdlib>
         <string>
         <unordered_map>
         <vector>

utils/create-module.py

@@ -7,11 +7,6 @@
 from pathlib import Path
 
 CMAKELISTS_TEMPLATE = """\
-check_include_file_cxx(stdint.h HAVE_STDINT_H)
-if(HAVE_STDINT_H)
-    add_definitions(-DHAVE_STDINT_H)
-endif()
-
 set(examples_as_tests_sources)
 if(${{ENABLE_EXAMPLES}})
     set(examples_as_tests_sources