AbiWord: Note: 2.6.4 tools installer adds .abicollab file extension to the registry

This is just a portability note for those interested in using the collaboration plug-in with AbiWord Portable. As of 2.6.4, the tools installer (exe) will add a .abicollab file extension to the registry if you choose to install AbiCollab. If you don't use the feature or don't mind the registry entries, you can ignore this :). If you do want to use the collaboration feature and don't want any registry changes, you can manually extract AbiCollab.dll, libsoup-2.4-1.dll, and libgthread-2.0-0.dll from the installer with 7-Zip Portable (just place the DLLs in the correct bin/ and plugins/ directories).