examples: update makefile to use $(CC)
mrp: debug updates

This commit updates debug output (no functional changes)
- adds mrpd_log_printf() which timestamps all output messages
- fixes debug strings in mrp_state_string()
- adds logging of timer start/stop operations
- renames MRP event debug strings to match those spec'd in 802.1Q
- update debug output update for client SND and RECV messages
mrpd: add timer running flags
mrpd: add timer running debug output
mrpd: call lvatimer stop on MRP_EVENT_LVATIMER
mrpd: don't (re)start jointimer if it is already running.
mrpd: MSVC version, add mrpd_log_printf() implementation.
mrpd: MSVC version, correct mrp_schedule_tx_event() implementation.
mrpd: debug updates
mrpd: support ARM build
mrpd: examples, add code to parse mrpd notifications and query response strings
mrpd: bugfix for msrp dumptable (S??) domain VID assignment character
examples: mrp_client, fix compiler warning
mrpd: disable logging output to reduce "noise"
mrp: LeaveAll FSM, bugfix, stop and restart LVA timer upon RLA event.
mrp: debug update (no functional change)
mrp: move operPointToPointMAC to header file and set to 1 by default.
mrpd: bugfix, need to start join timer on rLeaveAll event
mrpd: fix compiler warnings
mrpd: remove txnow code