Do not switch to a subdirectory when running 'test_cdf_const'.

This makes the test more transparent.

tests/test_cdf_const.in

@@ -2,16 +2,13 @@
 test 'x@ENABLE_NETCDF@' = xyes || exit 77
 
 exec >test_cdf_const.log 2>&1
-mkdir -p test_cdf_const.d
-cd test_cdf_const.d
-\rm -f *
 
-../../libtool --mode=execute ${tool_wrap} @abs_top_builddir@/examples/cdi_write_const || exit 1
-../../libtool --mode=execute ${tool_wrap} @abs_top_builddir@/app/cdi -s example_const.nc >cdi.$$.stdout 2>cdi.$$.stderr || exit 1
-../../libtool --mode=execute ${tool_wrap} @abs_top_builddir@/app/cdi example_const.nc >>cdi.$$.stdout 2>>cdi.$$.stderr || exit 1
+../libtool --mode=execute ${tool_wrap} @abs_top_builddir@/examples/cdi_write_const || exit 1
+../libtool --mode=execute ${tool_wrap} @abs_top_builddir@/app/cdi -s example_const.nc >cdi.$$.stdout 2>cdi.$$.stderr || exit 1
+../libtool --mode=execute ${tool_wrap} @abs_top_builddir@/app/cdi example_const.nc >>cdi.$$.stdout 2>>cdi.$$.stderr || exit 1
 
 echo "$0"
-exec 6<cdi.$$.stdout 7<../"$0"
+exec 6<cdi.$$.stdout 7<"$0"
 
 while read pattern <&7 ; do
   test "x$pattern" != 'x#PATTERNS' || break
@@ -35,8 +32,6 @@ test "x$pattern" = 'x#END PATTERNS' || exit 1
 
 exec 5<&- 6<&-
 \rm cdi.$$.stdout cdi.$$.stderr example_const.nc
-cd ..
-rmdir test_cdf_const.d
 \rm test_cdf_const.log
 
 #PATTERNS