path: search for package folders only if they containg package.mk file
it's much more universal way as it was before
openvpn: enable fragment support

closes #3569
timezone-data: update to 2014i

sources are uploaded, addresses #3576
Merge pull request #3570 from chewitt/openvpn-fragment

openvpn: enable fragment support
Merge pull request #3577 from chewitt/timezone-data

timezone-data: update to 2014i
Merge pull request #3538 from vpeter4/folder_path

path: search for package folders only if they containg package.mk file