Added rx_rate and tx_rate entries in both pwosfp_lsu_adv and pwosof_interface

	modified:   or_data_types.h
		 New entries are added to pwosfp_lsu_adv and pwosof_interface
Added some subroutines for testing

	modified:   sw/or_pwospf.c
Extended stats_avg to store rx_rate and tx_rate separatedly
Fixed a bug.
Some more progress

	modified:   or_data_types.h
		 Modified LSU update interval to 1 sec

	modified:   or_main.c
		 Silenced the annoying packet sending and receving printing
	modified:   or_output.c
		 Modified PWOSPF packet printing subroutine
	modified:   or_pwospf.c
		 Fixed some functions in this file
Modified Dijkstra's algorithm so that it takes link rates instead of hops as distance

	modified:   or_dijkstra.c
The final stage for lsu_modification