Unbreak after utmp changes.

Maintainer timeout, I mailed this in February when I fixed emacs22.

Tested on amd64/current and i386/8-stable.

editors/emacs21/Makefile

@@ -60,10 +60,6 @@ LATEST_LINK=	emacs21
 
 .include <bsd.port.pre.mk>
 
-.if ${OSVERSION} > 900007
-BROKEN=		fails to build with new utmpx
-.endif
-
 .if ${ARCH} == "ia64"
 CFLAGS:=	${CFLAGS:C/-O.?/-O0/g}
 CONFIGURE_ENV=	CFLAGS="${CFLAGS}"

editors/emacs21/files/patch-src:utmpx.c

@@ -0,0 +1,35 @@
+--- src/filelock.c.orig	2008-01-07 23:30:11.000000000 -0500
++++ src/filelock.c	2010-02-12 18:40:07.000000000 -0500
+@@ -64,7 +64,13 @@
+ 
+ #ifdef CLASH_DETECTION
+ 
++#if __FreeBSD_version >= 900007
++#include <utmpx.h>
++#undef BOOT_TIME
++#define ut_time ut_tv.tv_sec
++#else
+ #include <utmp.h>
++#endif
+ 
+ #if !defined (S_ISLNK) && defined (S_IFLNK)
+ #define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
+@@ -253,13 +259,17 @@
+    the first reboot record otherwise.
+    Ignore all reboot records on or before BOOT_TIME.
+    Success is indicated by setting BOOT_TIME to a larger value.  */
+-
+ void
+ get_boot_time_1 (filename, newest)
+      char *filename;
+      int newest;
+ {
++#if __FreeBSD_version >= 900007
++  struct utmpx ut, *utp;
++#else
+   struct utmp ut, *utp;
++#endif
++
+   int desc;
+ 
+   if (filename)