Some work on changing comments, log messages, and variable and function names to reflect that the plugins are not plugins anymore.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@7170 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Plugins/Plugin_VideoSoftware/Src/SWmain.cpp

@@ -100,7 +100,7 @@ void VideoBackend::Video_Prepare()
 {    
     SWRenderer::Prepare();
 
-    INFO_LOG(VIDEO, "Video plugin initialized.");
+    INFO_LOG(VIDEO, "Video backend initialized.");
 }
 
 // Run from the CPU thread (from VideoInterface.cpp)