Relicensing with GPLv3
1. add fetch command to allow pre-fetching sources
2. improve default config values
3. improve user confirm operation method
4. clean up trailing newlines in bashexec
5. convert top level binary to use OptParser
6. other minor bug fixes
ensure we can write to $prefix up front when performing install or update operations
handle fetching of packages without sources more gracefully
clean up gr-as recipe
adding gr-ldpc recipe
wireshark: update wget url
fix behavior of remove
fix for update method
Add recipes for zeromq and gr-zmqblocks.
Merge pull request #36 from iohannez/master

Add recipes for zeromq and gr-zmqblocks.
run volk profile after installing gnuradio, optionally submit performance statistics
provide a bit more explicit checking for a reasonable satisfy_order
fix single item satisfy_order & cppunit deps on 13.10
adding pysstv recipe
fix for openlte & gr-air-modes
switch smartnet to bootstrapautoconf
prompt at initial environment setup time whether to build doxygen docs or not
for existing pybombs installs please add "builddocs=ON" or "builddocs=OFF" to your config.dat
add a more helpful bash exit status checking message when things fail - suggest that users scroll up to the actual error message rather than posting the same unhelpful python assertion every time
display a more helpful message when writing setup_env.sh via the "pybombs env" command