[cmake-developers] new topic make-cpack-options-boolean

[Nils Gladitz]

The state of CPack component and group options currently depends on them 
being defined and not on their specific boolean value.

This is not only unexpected but also breaks with the CPackComponent 
macros which set these options to "FALSE" per default.

The new topic "make-cpack-options-boolean" changes that behavior.
Would this be ok for "next"?

Nils