Make CREDITS.txt a Latin-1 file. Extend ViewFile to support file encodings.
diff --git a/Lib/idlelib/CREDITS.txt b/Lib/idlelib/CREDITS.txt
index 62e2f8d..fe77576 100644
--- a/Lib/idlelib/CREDITS.txt
+++ b/Lib/idlelib/CREDITS.txt
@@ -22,7 +22,7 @@
Neal Norwitz (code check and clean-up), and Chui Tey (RPC integration, debugger
integration and persistent breakpoints).
-Hernan Foffani, Christos Georgiou, Martin v. Loewis, Jason Orendorff, Noam
+Hernan Foffani, Christos Georgiou, Martin v. Löwis, Jason Orendorff, Noam
Raphael, Josh Robb, Nigel Rowe, and Bruce Sherwood have submitted useful
patches. Thanks, guys!