COMP: Fix OpenSSL configure step to use expected zlib include and lib dir

On system without zlib header and library installed, openssl project
couldn't be built. This commit adds a custom step copying the zlib library
to the name expected by openssl build system and uses --with-zlib-{lib|include}
option as required bu Configure script.

While the "threads" option was the default, it is now explicitly specified.

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23998 3bd1e089-480b-0410-8dfb-8563597acbee