Karl Wette authored Apr 07, 2015 and Reinhard Prix committed Apr 09, 2015

- Gives user flexibility to free FstatInput in any order without
  problems; workspace is freed only once it's no longer needed
- First FstatInput allocates memory for workspace and reference
  counter; subsequent FstatInput store pointers to workspace and
  reference counter, which is incremented
- When destroyed, each FstatInput decrements reference counter;
  once it reaches 0, workspace and reference count memory are freed
- Refs #2001
Original: 503044dd82f5975b0cd5c6449f02d4658b561709