Update nano to 2.5.2

2016.02.12 - GNU nano 2.5.2 is carrying too many dogs.  This release includes
		several fixes for various memory leaks, position history
		size growth, and a long standing issue with using
		nano under sudo creating root-owned files.  There are also
		the usual bevy of documentation and other miscellaneous
		fixes and touch ups.  Upgrade today while supplies last,
		operators are standing by!

2016.01.11 - GNU nano 2.5.1 "Salzburg" is released.  It includes fixes
		for a syntax-highlighting bug and a positionlog bug, it
		disables a time-eating multiline regex in the C syntax,
		and it adds an escape hatch to the WriteOut menu when
		--tempfile is used: the discardbuffer command, ^Q.  It
		also has translation updates for fifteen languages, and
		a small fix in the softwrap code.  So... you are heartily
		invited to upgrade.  Enjoy!


(wiedi)