Another AC_TRY_LINK conversion to AC_LINK_IFELSE.

Sorting of function names.
Proper definition of HAVE_function if function is found deeper.

configure.ac

@@ -2082,60 +2082,66 @@ case $host in
      AC_MSG_NOTICE([skip check for pipe on msdosdjgpp])
     ;;
 esac
-AC_CHECK_FUNCS( strtoll \
+
-                socket \
+AC_CHECK_FUNCS([basename \
-                strdup \
+  closesocket \
-                strstr \
+  fork \
-                strcasestr \
+  ftruncate \
-                strtok_r \
+  geteuid \
-                uname \
-                strcasecmp \
-                stricmp \
-                strcmpi \
   gethostbyaddr \
+  getpass_r \
+  getppid \
+  getprotobyname \
+  getpwuid \
+  getrlimit \
   gettimeofday \
   inet_addr \
   inet_ntoa \
   inet_pton \
   perror \
-                closesocket \
-                siginterrupt \
-                sigaction \
-                signal \
-                getpass_r \
-                strlcat \
-                getpwuid \
-                geteuid \
-                getppid \
-                utime \
-                sigsetjmp \
-                basename \
-                setlocale \
-                ftruncate \
   pipe \
   poll \
-                getprotobyname \
+  setlocale \
-                getrlimit \
+  setmode \
   setrlimit \
-                fork \
+  sigaction \
-                setmode,
+  siginterrupt \
-dnl if found
+  signal \
-[],
+  sigsetjmp \
-dnl if not found, $ac_func is the name we check for
+  socket \
+  strcasecmp \
+  strcasestr \
+  strcmpi \
+  strdup \
+  stricmp \
+  strlcat \
+  strstr \
+  strtok_r \
+  strtoll \
+  uname \
+  utime
+],[
+],[
   func="$ac_func"
   eval skipcheck=\$skipcheck_$func
   if test "x$skipcheck" != "xyes"; then
     AC_MSG_CHECKING([deeper for $func])
-  AC_TRY_LINK( [],
+    AC_LINK_IFELSE([
-               [ $func ();],
+      AC_LANG_PROGRAM([[
-               AC_MSG_RESULT(yes!)
+      ]],[[
+        $func ();
+      ]])
+    ],[
+      AC_MSG_RESULT([yes])
       eval "ac_cv_func_$func=yes"
-               def=`echo "HAVE_$func" | tr 'a-z' 'A-Z'`
+      AC_DEFINE_UNQUOTED([AS_TR_CPP([HAVE_$func])], [1],
-               AC_DEFINE_UNQUOTED($def, 1, [If you have $func]),
+        [Define to 1 if you have the $func function.])
-               AC_MSG_RESULT(but still no)
+    ],[
-               )
+      AC_MSG_RESULT([but still no])
+    ])
   fi
-)
+])
+
 
 dnl sigsetjmp() might be a macro and no function so if it isn't found already
 dnl we make an extra check here!