tbf: Use bitvec based window methods for GPRS
Currently the old fixed 64 bit RBB based implementation is used for
GPRS.
Use the new bitvec based methods instead.
Sponsored-by: On-Waves ehf
diff --git a/tests/types/TypesTest.ok b/tests/types/TypesTest.ok
index 6ca2717..cb40d39 100644
--- a/tests/types/TypesTest.ok
+++ b/tests/types/TypesTest.ok
@@ -4,4 +4,5 @@
rbb: 00 00 00 00 00 00 00 03
rbb: 00 00 00 00 00 00 00 31
rbb: 10 00 00 00 00 00 00 01
-show_rbb: IIIIIIIIIIIIIIIIIIIIIIIIIIIIIRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR
+show_rbb: RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR
+show_rbb: IIRRIIIR