b2/: use glob syntax instead of RE syntax for substitutions

b2/SUBST

@@ -1,8 +1,8 @@
 REF=R[0-9]* {
 	T=R
-	VAL=.* { R=$$#R }
+	VAL=* { R=$$#R }
 	TOL = 5%
-	FN=.*% { TOL=${$#%} }
+	FN=*% { TOL=${$#%} }
 	break REF
 //	end break again
 }