mhd_check_func.m4: fixed macro

Previously macro failed with comma-delimited and quoted parameters

m4/mhd_check_func.m4

@@ -48,19 +48,19 @@
 
 AC_DEFUN([MHD_CHECK_FUNC],[dnl
   AC_PREREQ([2.64])dnl for AS_VAR_IF, m4_ifblank, m4_ifnblank
-  m4_ifblank(m4_translit($1,[()],[  ]), [m4_fatal([First macro argument must not be empty])])dnl
-  m4_ifblank($3, [m4_fatal([Third macro argument must not be empty])])dnl
-  m4_bmatch(m4_normalize($1), [\s],dnl
+  m4_ifblank(m4_translit([$1],[()],[  ]), [m4_fatal([First macro argument must not be empty])])dnl
+  m4_ifblank([$3], [m4_fatal([Third macro argument must not be empty])])dnl
+  m4_bmatch(m4_normalize([$1]), [\s],dnl
             [m4_fatal([First macro argument must not contain whitespaces])])dnl
-  m4_if(m4_index($3, m4_normalize(m4_translit($1,[()],[  ]))), [-1], dnl
-        [m4_fatal([CHECK_CODE parameter (third macro argument) does not contain ']m4_normalize($1)[' token])])dnl
-  AS_VAR_PUSHDEF([cv_Var], [mhd_cv_func_]m4_bpatsubst(m4_normalize(m4_translit($1,[()],[  ])),[[^a-zA-Z0-9]],[_]))dnl
+  m4_if(m4_index([$3], m4_normalize(m4_translit([$1],[()],[  ]))), [-1], dnl
+        [m4_fatal([CHECK_CODE parameter (third macro argument) does not contain ']m4_normalize([$1])[' token])])dnl
+  AS_VAR_PUSHDEF([cv_Var], [mhd_cv_func_]m4_bpatsubst(_mhd_norm_expd(m4_translit([$1],[()],[  ])),[[^a-zA-Z0-9]],[_]))dnl
   dnl
-  AC_CACHE_CHECK([for function $1], [cv_Var],
+  AC_CACHE_CHECK([for function $1], cv_Var,
     [dnl
       m4_ifnblank([$6],[dnl
         mhd_check_func_SAVE_LIBS="$LIBS"
-        LIBS="$LIBS m4_normalize([$6])"
+        LIBS="$LIBS _mhd_norm_expd([$6])"
       ])dnl
       AC_LINK_IFELSE(
         [AC_LANG_PROGRAM([m4_default_nblank([$2],[AC_INCLUDES_DEFAULT])], [$3]) ],
@@ -71,8 +71,8 @@ AC_DEFUN([MHD_CHECK_FUNC],[dnl
       ])dnl
     ])
   AS_VAR_IF([cv_Var], ["yes"],
-            [AC_DEFINE([[HAVE_]]m4_bpatsubst(m4_toupper(m4_normalize(m4_translit($1,[()],[  ]))),[[^A-Z0-9]],[_]),
-                       [1], [Define to 1 if you have the `]m4_normalize(m4_translit($1,[()],[  ]))[' function.])
+            [AC_DEFINE([[HAVE_]]m4_bpatsubst(m4_toupper(_mhd_norm_expd(m4_translit([$1],[()],[  ]))),[[^A-Z0-9]],[_]),
+                       [1], [Define to 1 if you have the ']_mhd_norm_expd(m4_translit([$1],[()],[  ]))[' function.])
             m4_n([$4])dnl
             ], [$5])
   AS_VAR_POPDEF([cv_Var])dnl