NRL NORM

Numerous bugfixes and code cleanups were done.
Some minor enhancements were made.

This release fixes a condition where receivers kept state for remote senders "stuck" with CC feedback. It fixes a bug that turned the default TTL value into TOS under certain conditions. NormFile read/write is more persistent. A bug has been fixed that incorrectly reported no repair needed when in fact the last segment was missing. A bug that interfered with proper sender stream advancement under severe conditions has been fixed. FEC codecs have been updated to current versions. The "lowDelay" option has been modified for silent receiver use to allow control of FEC block delay. A "Norm Pre-Coder" (NPC) utility has been added.

This release fixes several moderate to major bugs, including divide-by-zero, assertion failures, and incorrect pointer dereferencing. It fixes numerous minor bugs.

Bugs in NormQuantizeGroupSize() and in receiver
congestion control tracking functions were fixed.
The NormGetGrtt() and NormNodeGetGrtt() functions
and the NORM_CC_ACTIVE and NORM_CC_INACTIVE
notifications were added. Bugs in ns-2 support
were fixed. FEC parity segments were modified to
be variable size. SERVER* notifications were
renamed to SENDER* for consistancy. Incorrect
reporting of nack/suppresed counts in debug
statistics were fixed. The activity timeout for
the remote sender was fixed.

This release includes an implementation of RFC3940 and RFC3941, heavy re-use of code and techniques from MDP, and an implementation of an NS-2 simulation of the protocol.