some config.* files were not ignored due to trailing white space

removed duplicate entries while at it [[Imported from SVN: r1925]]

some config.* files were not ignored due to trailing white space
51558615 · Martin Nolte · 68b58838 · 51558615
Commit 51558615 authored 11 years ago by Martin Nolte
--- a/.gitignore
+++ b/.gitignore
 Makefile
 Makefile.in
-config.guess  
+config.guess
-config.h.in   
+config.h.in
-config.log  
+config.log
 config.status
-config.h      
+config.h
-config.lt   
+config.lt
 config.sub
 configure
 dependencies.m4
@@ -25,5 +25,3 @@ dune-istl-?.?
 ltmain.sh
 am
 .libs
-config.guess
-config.h.in