Move werrstr into errstr, so that if you use werrstr

you have to get this __errfmt instead of the one
in libfmt that only does Unix error codes.

src/lib9/Makefile

@@ -16,10 +16,12 @@ OFILES=\
 	lock.$O\
 	malloctag.$O\
 	mallocz.$O\
+	netmkaddr.$O\
 	nrand.$O\
 	qlock.$O\
 	readn.$O\
 	rendez-$(SYSNAME).$O\
+	sleep.$O\
 	strecpy.$O\
 	sysfatal.$O\
 	tas-$(OBJTYPE).$O\
@@ -28,7 +30,6 @@ OFILES=\
 	u32.$O\
 	u64.$O\
 	wait.$O\
-	werrstr.$O\
 
 HFILES=\
 	$(PLAN9)/include/lib9.h\

src/lib9/errstr.c

@@ -66,3 +66,15 @@ __errfmt(Fmt *f)
 		return fmtstrcpy(f, getsyserr());
 	return fmtstrcpy(f, strerror(errno));
 }
+
+void
+werrstr(char *fmt, ...)
+{
+	va_list arg;
+	char buf[ERRMAX];
+
+	va_start(arg, fmt);
+	vseprint(buf, buf+ERRMAX, fmt, arg);
+	va_end(arg);
+	errstr(buf, ERRMAX);
+}

src/lib9/werrstr.c

@@ -1,13 +0,0 @@
-#include <lib9.h>
-
-void
-werrstr(char *fmt, ...)
-{
-	va_list arg;
-	char buf[ERRMAX];
-
-	va_start(arg, fmt);
-	vseprint(buf, buf+ERRMAX, fmt, arg);
-	va_end(arg);
-	errstr(buf, ERRMAX);
-}