The fds.swc file should be located in the LiveCycle version of the Flex SDK. You can get that version of the SDK from your DVD under livecycle_dataservices folder. The file you are looking for is called flex_sdk_3.zip. All the localization files you require are also in the LiveCycle version of the SDK. Even though the name of the file seems to imply that it is a vanilla version of Flex SDK 3, it is not. Please refer to page 18 of the Customizing the LiveCylcle Workspace ES User Interface guide at http://www.adobe.com/go/learn_lc_customizeWorkspace_82.
The workspace resource bundles (workspace_rb_*.swc) and workspace-theme.swf (It is a SWF file) are created when you compile the theme. You need to compile the Workspace source code to generate those. You can get them from extracting the adobe-workspace-client.ear file and then extracting the adobe-workspace-client.war file for the locale you want.
If memory serves me correctly, there is no longer a toast SWC in 8.2 Update 1. I'm not 100% certain for 8.2 as I do not have a build to compare to. Sorry but you should be able to get those files as well from extracting it from the workspace EAR and respective WAR file.
Hope that helps.