Correct conf and share/doc/api directory packaging in zip

When packaged on a windows system a blank directory would be setup in the
zip file under the conf and share/doc/api directories. Windows explorer
unzipping would prompt for a password entry when extracting these files.
7-zip would display these are a blank directory. ie, for the logging.xml
file, it would display (in 7-zip) as conf\logging.xml
When extracting on a non-Windows based system, the files under the conf
and api doc directory would be preceded with a backslash () and would not
extract correctly.

Tested on Windows, don't have a linux based system to try the packaging
on.
Merge branch 'master' of https://github.com/doswell/playframework