cosmetics: trim trailing whitespace

When the license headers were updated, they accidentally contained
trailing whitespace, so unfortunately we have to touch all the files
again.

Change-Id: I236c05fade06589e417179c0444cb39b09e4200d
diff --git a/README b/README
index cfaf4cc..f0625d3 100644
--- a/README
+++ b/README
@@ -9,18 +9,18 @@
   the application.
 
   1. Prerequisites
-  
+
     * All x86 targets require the Yasm[1] assembler be installed.
     * All Windows builds require that Cygwin[2] be installed.
     * Building the documentation requires PHP[3] and Doxygen[4]. If you do not
       have these packages, you must pass --disable-install-docs to the
       configure script.
-    
+
     [1]: http://www.tortall.net/projects/yasm
     [2]: http://www.cygwin.com
     [3]: http://php.net
     [4]: http://www.doxygen.org
-    
+
   2. Out-of-tree builds
   Out of tree builds are a supported method of building the application. For
   an out of tree build, the source tree is kept separate from the object