only generate non-trivial signatures in the
file in which they occur.  avoids duplicate
trampoline generation across multiple files.

R=ken
OCL=20976
CL=20980
diff --git a/src/cmd/gc/go.h b/src/cmd/gc/go.h
index 5dea32c..8ab5c24 100644
--- a/src/cmd/gc/go.h
+++ b/src/cmd/gc/go.h
@@ -157,6 +157,7 @@
 	uchar	siggen;
 	uchar	funarg;
 	uchar	copyany;
+	uchar	local;		// created in this file
 
 	// TFUNCT
 	uchar	thistuple;
@@ -238,7 +239,6 @@
 	uchar	exported;	// exported
 	uchar	imported;	// imported
 	uchar	sym;		// huffman encoding in object file
-	uchar	local;		// created in this file
 	uchar	uniq;		// imbedded field name first found
 	uchar	siggen;		// signature generated