0.3 release branch

git-svn-id: https://svn.apache.org/repos/asf/qpid/proton/branches/0.3@1433498 13f79535-47bb-0310-9956-ffa450edef68
PROTON-202: Fixes building proton on non-x86 platforms.

Submitted by: Dan Horák <dan@danny.cz>

git-svn-id: https://svn.apache.org/repos/asf/qpid/proton/trunk@1438546 13f79535-47bb-0310-9956-ffa450edef68
PROTON-202: Assigns a default value to scanned in codec.c

Submitted by: Dan Horák <dan@danny.cz>

git-svn-id: https://svn.apache.org/repos/asf/qpid/proton/trunk@1439349 13f79535-47bb-0310-9956-ffa450edef68