stack allocation for the init function

R=r
OCL=17063
CL=17063
diff --git a/src/cmd/gc/go.h b/src/cmd/gc/go.h
index 5916b11..fec7ba7 100644
--- a/src/cmd/gc/go.h
+++ b/src/cmd/gc/go.h
@@ -451,7 +451,8 @@
 EXTERN	int32	vargen;
 EXTERN	int32	exportgen;
 EXTERN	int32	maxarg;
-EXTERN	int32	stksize;
+EXTERN	int32	stksize;		// stack size for current frame
+EXTERN	int32	initstksize;		// stack size for init function
 EXTERN	ushort	blockgen;		// max block number
 EXTERN	ushort	block;			// current block number