wca/zfs-ffi — pull request #4 by asomers (2014-06-25 19:18:14+00:00)
Title: Fix handling DATA_TYPE_BOOLEAN

DATA_TYPE_BOOLEAN (not to be confused with DATA_TYPE_BOOLEAN_VALUE) is a
special data type that never has an nvpair. It's value is implied to be
true by its name's presence in an nvlist.