.gitignore: add a missing test executable

Also alphebetize the ignored files in test/class.

.gitignore

@@ -754,21 +754,24 @@ test/asm/atomic_barrier_noinline
 test/asm/atomic_spinlock
 test/asm/*.log
 test/asm/*.trs
+
 test/class/*.txt
 test/class/*.exe
-test/class/ompi_circular_buffer_fifo
-test/class/ompi_bitmap_test_out.txt
-test/class/ompi_fifo
-test/class/opal_list
-test/class/opal_hash_table
-test/class/opal_value_array
-test/class/ompi_rb_tree
-test/class/ompi_bitmap
-test/class/opal_pointer_array
-test/class/opal_bitmap
-test/class/opal_tree
 test/class/*.log
 test/class/*.trs
+test/class/ompi_bitmap_test_out.txt
+test/class/ompi_circular_buffer_fifo
+test/class/ompi_fifo
+test/class/ompi_rb_tree
+test/class/ompi_bitmap
+test/class/opal_bitmap
+test/class/opal_hash_table
+test/class/opal_list
+test/class/opal_pointer_array
+test/class/opal_proc_table
+test/class/opal_tree
+test/class/opal_value_array
+
 test/datatype/ddt_test
 test/datatype/ddt_pack
 test/datatype/to_self