win32: fixed crash on network failure.

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@3418 ee746299-78ed-0310-b773-934348b2243d
win32: removed self definition of gai_strerror().

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@3419 ee746299-78ed-0310-b773-934348b2243d
updated version to 3.5.0beta1.

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@3420 ee746299-78ed-0310-b773-934348b2243d
updated macosx/bundle/Info-sylpheed.plist

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@3421 ee746299-78ed-0310-b773-934348b2243d
made 3.5.0beta1 release.

git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@3422 ee746299-78ed-0310-b773-934348b2243d