Refs #3929 Forum; always seek(0) on streams when creating a bfile

git-svn-id: https://svn.eionet.europa.eu/repositories/Naaya/trunk/eggs/naaya.content.bfile@21301 a0171fae-0946-0410-966d-b1775066cd26
Bump to development

git-svn-id: https://svn.eionet.europa.eu/repositories/Naaya/trunk/eggs/naaya.content.bfile@21302 a0171fae-0946-0410-966d-b1775066cd26