Fix x86_64/gettimeofday.c

[Andreas Jaeger]

With the last round of commits, build fails on x86-64 with:
cc-base/libc.a(gettimeofday.o): In function `__gettimeofday':
../sysdeps/unix/sysv/linux/x86_64/gettimeofday.c:45: undefined reference to `__set_errno'

Here's a fix,
Andreas

2011-09-06  Andreas Jaeger  <aj@suse.de>

	* sysdeps/unix/sysv/linux/x86_64/gettimeofday.c: Include <errno.h>
	to fix build.

diff --git a/sysdeps/unix/sysv/linux/x86_64/gettimeofday.c b/sysdeps/unix/sysv/linux/x86_64/gettimeofday.c
index 56171bc..5781b84 100644
--- a/sysdeps/unix/sysv/linux/x86_64/gettimeofday.c
+++ b/sysdeps/unix/sysv/linux/x86_64/gettimeofday.c
@@ -36,6 +36,7 @@ gettimeofday_ifunc (void)
 }
 __asm (".type __gettimeofday, %gnu_indirect_function");
 #else
+# include <errno.h>
 # include <sys/time.h>
 # include <sysdep.h>
 

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