Ticket #2740: code cleanup before 4.8.2 release.

Removes references to AC_HEADER_STDC macro, marked as obsolescent
in the Autoconf 2.60 release.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

configure.ac

@@ -150,7 +150,6 @@ AC_CHECK_HEADERS([unistd.h string.h memory.h limits.h malloc.h \
 
 AC_HEADER_TIME
 AC_HEADER_DIRENT
-AC_HEADER_STDC
 
 dnl Missing structure components
 AC_CHECK_MEMBERS([struct stat.st_blksize, struct stat.st_rdev])

lib/global.h

@@ -7,14 +7,12 @@
 #ifndef MC_GLOBAL_H
 #define MC_GLOBAL_H
 
-#if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
+#if defined(HAVE_STRING_H)
 #include <string.h>
    /* An ANSI string.h and pre-ANSI memory.h might conflict */
-#if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
+#elif defined(HAVE_MEMORY_H)
 #include <memory.h>
-#endif /* !STDC_HEADERS & HAVE_MEMORY_H */
-
-#else /* !STDC_HEADERS & !HAVE_STRING_H */
+#else
 #include <strings.h>
     /* memory and strings.h conflict on other systems */
 #endif /* !STDC_HEADERS & !HAVE_STRING_H */

src/vfs/smbfs/helpers/configure.ac

@@ -38,7 +38,6 @@ AC_VALIDATE_CACHE_SYSTEM_TYPE
 SAMBA_MAINTAINER_MODE
 
 AC_INLINE
-AC_HEADER_STDC
 AC_HEADER_DIRENT
 AC_HEADER_TIME
 AC_CHECK_HEADERS(arpa/inet.h sys/fcntl.h sys/select.h fcntl.h sys/time.h sys/unistd.h)