splunk/pion — pull request #50 by camio (2014-04-03 00:20:17+00:00)
Title: Made 'include_directories' use correct boost include var.

The documentation of FindBoost (cmake --help-module FindBoost)
indicates that 'Boost_INCLUDE_DIRS' points to the boost includes and not
'Boost_INCLUDE_DIR'.

This bug could inadvertently cause pion to use system boost headers with
another boost installation's libraries.