handle "u" and "b".

Reference: /n/sources/patch/applied/varargchkverbs
Date: Sun Jun 11 12:14:29 CES 2006
Signed-off-by: quanstro@quanstro.net

--- /sys/include/libc.h	Sun Jun 11 11:57:44 2006
+++ /sys/include/libc.h	Sun Jun 11 11:57:35 2006
@@ -181,16 +181,20 @@
 #pragma	varargck	type	"llx"	uvlong
 #pragma	varargck	type	"ld"	long
 #pragma	varargck	type	"lx"	long
+#pragma	varargck	type	"lb"	long
 #pragma	varargck	type	"ld"	ulong
 #pragma	varargck	type	"lx"	ulong
+#pragma	varargck	type	"lb"	ulong
 #pragma	varargck	type	"d"	int
 #pragma	varargck	type	"x"	int
 #pragma	varargck	type	"c"	int
 #pragma	varargck	type	"C"	int
+#pragma	varargck type	"b"	int
 #pragma	varargck	type	"d"	uint
 #pragma	varargck	type	"x"	uint
 #pragma	varargck	type	"c"	uint
 #pragma	varargck	type	"C"	uint
+#pragma	varargck	type	"b"	uint
 #pragma	varargck	type	"f"	double
 #pragma	varargck	type	"e"	double
 #pragma	varargck	type	"g"	double
--- /sys/src/cmd/cc/dpchk.c	Sun Jun 11 11:58:08 2006
+++ /sys/src/cmd/cc/dpchk.c	Sun Jun 11 11:58:00 2006
@@ -158,6 +158,7 @@
 	argflag('.', Fignor);
 	argflag('#', Fignor);
 	argflag('u', Fignor);
+	argflag('h', Fignor);
 	argflag('+', Fignor);
 	argflag('-', Fignor);