Documentation updates in preparation of the 0.91 beta release.

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@358885 13f79535-47bb-0310-9956-ffa450edef68

"build/site" is now copied to "docs".
The build directory isn't included in either distribution anymore.
Source distribution doesn't contain fop.jar, javadocs and compiled docs anymore to make the distribution smaller.
KEYS and status.xml and lib/xalan*.txt added (Thanks, Simon).
Added version info to javadocs.
Removed limitation to build javadocs only with JDKs >= 1.4. It works fine for me on Win32 Sun JDK 1.3.1_15.
You can add "javahome.jdk14" to your build-local.properties so Forrest docs can be built during a JDK 1.3 distribution build.
Added release notes to site (Thanks, Christian, for the reminder).
Append JDK indicator to binary distribution using system property java.specification.version.
upgrade guide: new configuration format (CG)
Documented additional known issue with PS Renderer that I didn't have time to fix.
Redirects and release names cleaned up as per Simon's suggestions.
Added link to latest release branch to download page.

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@348205 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@329560 13f79535-47bb-0310-9956-ffa450edef68