Fix t9200 on case insensitive file systems

t9200 defines $CVSROOT where cvs should init its repository
$CVSROOT is set to $PWD/cvsroot.
cvs init is supposed to create the repository inside $PWD/cvsroot/CVSROOT

"cvs init" (e.g. version  1.11.23) checks if the last element of the path is
"CVSROOT", and if a directory with e.g. $PWD/cvsroot/CVSROOT already exists.

For such a $CVSROOT cvs refuses to init a repository here:
"Cannot initialize repository under existing CVSROOT:

On a case insenstive file system cvsroot and CVSROOT are the same directories
and t9200 fails.

Solution: use $PWD/tmpcvsroot instead of cvsroot $PWD/cvsroot

Signed-off-by: Torsten Bögershausen <[email protected]>
Signed-off-by: Jeff King <[email protected]>

Author: tboegi

t/t9200-git-cvsexportcommit.sh

@@ -19,7 +19,7 @@ then
     test_done
 fi
 
-CVSROOT=$PWD/cvsroot
+CVSROOT=$PWD/tmpcvsroot
 CVSWORK=$PWD/cvswork
 GIT_DIR=$PWD/.git
 export CVSROOT CVSWORK GIT_DIR