Multiple Changes

[PolynomialDivision]

Replaces:
#157

LOGGING: Provide multi-priority syslog() based logging to improve user and developer experience
Add dawnlog_* functions and macros to convert printf() family and perror() logging to syslog() family
Removed unnecessary sprintf() for building log strings (embed format directly)
Add local config settings for log level
Add command line parameters for log level and destination
Set default log level to suppress a lot of previously noisy messages
Restore some previously removed noisy messages as DEBUG level in case they help in future
Eliminate DAWN_NO_OUTPUT static code checks which are no longer used

MEM: TIghten up some memory handling to help spot errors
Set pointers to NULL after free() to help force out memory handling errors
Add some extra memory / resource tracking to try and chase out latent bugs / leaks
Fixed a couple of memory traces that were misreporting

MAINT: General revisions to maintain code (no functional changes intended)
Removed unnecessary linked-list length checks
Fixed some typos on function names / comments
Changed how test_storage forces SEGV due to new compiler warnings

FIX1: Bug that could proably cause ineffciency or confusion in multi-SSID environments
Adjusted erroneus match test in ap_array_insert()

FIX2: Bug that was preventing kicking working due to mishandling of bandwidth discovery
Fixed bug in use of get_bandwidth_iwinfo() in AP kicking
Fix rounding of transmission rate calculations in get_bandwidth_iwinfo()
Restructure of get_bandwidth...() while finding bug

FEAT1: Refresh of kicking algorithm to minimise messages and streamline some code
Removed decide_function() which made some logic hard to follow
Removed kick_client() function to streamline code
Revised kicking algorithm code to give better user messages

[PolynomialDivision]

Thanks! I will merge into master.