fixes from bengt for sun

src/cmd/rc/exec.c

diff --git a/src/cmd/rc/exec.c b/src/cmd/rc/exec.c
index e9fb444..e179154 100644
--- a/src/cmd/rc/exec.c
+++ b/src/cmd/rc/exec.c
@@ -1,9 +1,9 @@
 #include <u.h>
 #include <signal.h>
-#include <sys/ioctl.h>
 #if defined(PLAN9PORT) && defined(__sun__)
 #	define BSD_COMP	/* sigh.  for TIOCNOTTY */
 #endif
+#include <sys/ioctl.h>
 #include "rc.h"
 #include "getflags.h"
 #include "exec.h"
@@ -115,7 +115,7 @@
 	int i;
 	
 	/* needed for rcmain later */
-	setenv("PLAN9", unsharp("#9"), 1);
+	putenv("PLAN9", unsharp("#9"));
 
 	argc=getflags(argc, argv, "srdiIlxepvVc:1m:1[command]", 1);
 	if(argc==-1) usage("[file [arg ...]]");