Merge pull request #48 from lakoon/master

Adding dependencies for gr-ieee-80211 and gr-air-modes
support parralel build of boost
ensure any new variables added to config.defaults are prompted and added to config.dat before we run any new commands
allow itpp8
sysutils.py: Removed rpm_install() once, since it was defined twice.
add gr-op25 recipe
Merge pull request #51 from mmhhpp/master

add gr-op25 recipe
Merge pull request #49 from FloFra/master

sysutils.py: Removed rpm_install() once, since it was defined twice.
Switching gr-ais recipe to bistromath repo.  Builds for 3.7 now.
Merge pull request #52 from dcajacob/master

Switching gr-ais recipe to bistromath repo.  Builds for 3.7 now.
pyuic (part of pyqt4-dev-tools) is needed for modes_gui (part of gr-air-modes) to compile.
gr-air-modes still compiles without, but modes_gui will not work.