*) Use "close-on-exec" semantic on internal file descriptors if
underlying platform supports this feature. This makes sure the file
descriptors are closed by the kernel upon execution of exec(3) by
the application.
buildlink2.mk files back into the main trunk. This provides sufficient
buildlink2 infrastructure to start merging other packages from the
buildlink2 branch that have already been converted to use the buildlink2
framework.
