DIET/MINOR: stream-int: rearrange a few fields in struct stream_interface to save 8 bytes

The current and previous states are now packed enums instead of ints. This will
also help in gdb. The flags have been turned to 16-bit instead of 32 since only
10 are used. This resulted in saving 8 bytes per streamm interface, or 16 per
session.
1 file changed