time.c: can't compile time.c on AIX due to missing declaration for

ffs(). It is declared in strings.h on AIX.
        
        If I need to add something like '&& defined(_AIX)',
        please let me know.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32518 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Mon Jul 11 23:22:28 2011  Yutaka Kanemoto  <kanemoto@ruby-lang.org>
+
+	* time.c: can't compile time.c on AIX due to missing declaration for
+	  ffs(). It is declared in strings.h on AIX.
+
 Mon Jul 11 15:54:24 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
 
 	* process.c: removed signal() macro. It's no longer used.

time.c

@@ -23,6 +23,10 @@
 #include <float.h>
 #include <math.h>
 
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+
 #include "timev.h"
 
 static ID id_divmod, id_mul, id_submicro, id_nano_num, id_nano_den, id_offset;