protobuf-c.c: wrap DO_ALLOC macro in a do {} while(0) statement
protobuf-c/protobuf-c.c: add explicit casts in parsing functions for
better compatibility with 8- and 16-bit platforms (integrate fixes
from #47)
ChangeLog: fix trailing whitespace
LICENSE: add a statement about the ownership of protoc-c output

Signed-off-by: Dave Benson <lahiker42@gmail.com>
Merge remote-tracking branch 'official/master'

Conflicts:
	protobuf-c/protobuf-c.c