libreoffice conditional: newest is default

- newest is: x86-64 + Mountain Lion or better
- test against documented `MacOS.version` instead of `OS::Mac.version`
aquamacs conditional: newest hardware default
eclipse-ide conditional: newest hardware default
eclipse-java conditional: newest hardware default
eclipse-jee conditional: newest hardware default
eclipse-platform conditional: newest hardware deflt
gambit-c conditional: newest hardware default
geppetto conditional: newest hardware default
p4v conditional: newest hardware default
praat conditional: newest hardware default
reaper conditional: newest hardware default
streamtools conditional: newest hardware default
vuescan conditional: newest hardware default
bassjump conditional: newest OS default
coconutbattery conditional: newest OS default
git-annex conditional: newest OS default
golly conditional: newest OS default
macports conditional: newest OS default
macvim conditional: newest OS default
middleclick conditional: newest OS default