Teach new_tarval_from_str_int() to parse binary numbers: 0[bB][01]+.

include/libfirm/tv.h

@@ -70,6 +70,7 @@
  * if mode is int_number:
  *  - [+-]?0[xX][0-9a-fA-F]+ (hexadecimal representation)
  *  - [+-]?0[0-7]*           (octal representation)
+ *  - [+-]?0[bB][01]+        (binary representation)
  *  - [+-]?[1-9][0-9]*       (decimal representation)
  *
  * if mode is float_number:

ir/tv/tv.c

@@ -344,6 +344,10 @@ static ir_tarval *new_tarval_from_str_int(const char *str, size_t len,
 			str += 2;
 			len -= 2;
 			base = 16;
+		} else if (str[1] == 'b' || str[1] == 'B') {
+			str += 2;
+			len -= 2;
+			base = 2;
 		} else {
 			++str;
 			--len;