Replace tabs with spaces in the cabal file

Author: Mitsutoshi Aoe

threadscope.cabal

@@ -4,13 +4,13 @@ Category:            Development, Profiling, Trace
 Synopsis:            A graphical tool for profiling parallel Haskell programs.
 Description:         ThreadScope is a graphical viewer for thread profile
                      information generated by the Glasgow Haskell compiler
-		     (GHC).
-		     .
-		     The Threadscope program allows us to debug the parallel
-		     performance of Haskell programs. Using Threadscope we can
-		     check to see that work is well balanced across the
-		     available processors and spot performance issues relating
-		     to garbage collection or poor load balancing.
+                     (GHC).
+                     .
+                     The Threadscope program allows us to debug the parallel
+                     performance of Haskell programs. Using Threadscope we can
+                     check to see that work is well balanced across the
+                     available processors and spot performance issues relating
+                     to garbage collection or poor load balancing.
 License:             BSD3
 License-file:        LICENSE
 Copyright:           2009-2010 Satnam Singh,