Modify log level of messages according to:
	FATAL:	application need to die
	ERROR:	general error which is wrong input values or just a general failure
	WARNING: nothing big happened, but application might work better if warning
		is handled (update OFED, tune parameters, ...)
	INFO:	as library there should be nothing we have to say to use/application
		(maybe just 'hello, I`m libXYZ, version 1.2.3')
	DEBUG:	control path logging
	TRACE:	fast path logging
changing functions names

Signed-off-by: Eyal Salomon <esalomon@mellanox.com>