Fix bug in parsing compressed files with row lengths longer than 64K.  New row limit is 4M.
Issue warning message when 4MB limit is exceeded for row length when parsing compressed data.
Merge branch 'brandon-fixes'

* brandon-fixes:
  Issue warning message when 4MB limit is exceeded for row length when parsing compressed data.
  Fix bug in parsing compressed files with row lengths longer than 64K.  New row limit is 4M.