Developer's guide to upgrading the AJDT build to a newer version of Eclipse

See [Developer's guide to driving the AJDT build process] and get the build process working locally first on the current version of Eclipse.
Edit the local.properties file to select the appropriate workspace and build destination.
Edit provisioning_support/download.properties to add the new version of Eclipse that you will be using
Edit buildAll.xml and replace references to ${build.url.3.X} to your new version of Eclipse. Note that only the target eclipse must be changed. The build Eclipse can remain in the old version.
Optionally update the bundles in the build_bundles folder.

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