Add support for user-level 9P servers/clients and various bug fixes to go with them.
diff --git a/src/cmd/dc.c b/src/cmd/dc.c
index 21967de..daff401 100644
--- a/src/cmd/dc.c
+++ b/src/cmd/dc.c
@@ -21,6 +21,7 @@
 #define NE 3
 #define length(p)	((p)->wt-(p)->beg)
 #define rewind(p)	(p)->rd=(p)->beg
+#undef create
 #define create(p)	(p)->rd = (p)->wt = (p)->beg
 #define fsfile(p)	(p)->rd = (p)->wt
 #define truncate(p)	(p)->wt = (p)->rd