rstp: replace white spaces with tabs in lib/automake.mk.
rstp: Use eth_addr_stp instead of eth_addr_rstp.
rstp: Order includes.
rstp: Replace tabs with whitespaces in source files.
rstp: Rename TOPOLOGY_CHANGE_NOTIFICATION in TOPOLOGY_CHANGE_NOTIFICATION_BPDU.
rstp: Remove C++ comments.
rstp: Fix typos in comments.
rstp: Add empty lines after variables' declarations.
rstp: Remove unnecessary CONST_CAST.
rstp: Remove tx_count increment from rstp_send_bpdu().
rstp: Remove space before parenthesis after state machines functions' names.
rstp: Remove spaces between the * and variables' names.
rstp: Fix check_selected_role_change dead code.
rstp: rstp_priority_vector_is_superior() now returns an enum.
rstp: rstp_tick_timers() and rstp_received_bpdu() return void.
rstp: Use ETH_ADDR_LEN instead of 6.
rstp: Use ETH_ADDR_LEN instead of 6 #2.
rstp: Rename rstp_port_no() in rstp_port_index().
rstp: Bridge and port setters return type set to void.
rstp: Take mutex after VLOG_DBG call in setters.