[CMake] CPack packagemaker osx post install script

[Francois Coulombe]

Hi,
I am wondering if anyone has managed to get the post install post flight 
post upgrade to work on osx with package maker as generator.
I found a few entries that didn't seem to go anywhere (no resolution to 
the actual problem)

and i can't seem to get it to work with:

set( CPACK_POSTFLIGHT_SCRIPT "postflight.sh" )
set(CPACK_POSTUPGRADE_SCRIPT "postflight.sh")

neither seem to run.

any info would be appreciated

cheers
Francois