Annual ChangeLog rotation.



git-svn-id: http://svn.savannah.nongnu.org/svn/avr-libc/trunk@2304 1084037a-409f-4a99-8160-1a4b3577d4c1
Submitted by Jan Waclawek:
* doc/api/assembler.dox: Mention that .sx is an alternate suffix
for .S



git-svn-id: http://svn.savannah.nongnu.org/svn/avr-libc/trunk@2305 1084037a-409f-4a99-8160-1a4b3577d4c1