Updated links to the existing documentation approaches

The links for Javadoc and embedded XML were broken and lead to void. They have been replaced with working ones.
Correction of external link for embedded XML
Merge pull request #377 from llucenic/patch-1

Updated links to the existing documentation approaches
add dll-linux.html
Merge pull request #375 from WalterBright/add-dll-linux

add dll-linux.html