Helps to set INSTALLATION_DIRS too.
Added devel/py-libevent-rpcgen version 2.0.21
Fix cross-build of devel/yasm by setting CC_FOR_BUILD to NATIVE_CC.
Fix cross-build of textproc/enca: use CC_FOR_BUILD and avoid run-tests.
Fix cross-build of x264-devel by passing --host to configure.
First stab at cross-compiling ffmpeg.

Won't work on arm yet because we need to specify the arm cpu flavour.
Pre-answer openldap autoconf run-tests for NetBSD cross-builds.
Added dvdcss as an option.
Fortran is not needed.
Changes 3.0.4:
This release adds several performance features for the Hydra process manager, support for communicator-specific tuning of eager/rendezvous thresholds, and fixes several bugs present in 3.0.3. Please use this release instead of 3.0.3.
Added PLIST.Darwin
Updated parallel/mpi-ch to 3.0.4
check defined before using USE_LANGUAGES as condition.