You need to install EGit, an Eclipse plugin. Go to the Help menu, and select "Install New Software". At the top of the dialog, pick the site for Eclipse Indigo repository. Under the Collaboration group of plugins, look for EGit or Eclipse Git Team Provider.
Thanks Carl. That was the key, getting the correct version of EGit. I followed other instructions that tried to install the latest version of EGit. I kept getting conflicting software errors. Here's the process I followed. First, go to this link to determine the version of EGit you need: http://wiki.eclipse.org/EGit/FAQ#What_versions_of_Eclipse_does_EGit_target.3F Go to the table labeled "What versions of Eclipse does EGit target?" Look at the column labeled Supported Version of Eclipse to find your version of Eclipse. In my case, it was Eclipse 3.7.2+ (Indigo). There are two versions of EGit for this listed., 2.2.0 and 2.3.1. If you look in the table above labeled "Where can I find older releases of EGit?" you will see the column named "Release Versions" with your version of EGit. In the right column, labeled "p2 repository URL", you will see a link. I used the one for EGit 2.2.0 as it was the one that installed correctly without an error. The link I entered in CFB's install new software was http://archive.eclipse.org/egit/updates-2.2
There is a great tutorial on this at http://cfmumbojumbo.com/cf/githelp/index.htm It is for Coldfusion 9, but it still works.
Thanks for pointing me to the right version!