core: don't import filter here; causes cyclic import problem. Just installing example taps by hand.
volk: removing redundant test in volk_profile.
Merge branch 'next' of gnuradio.org:gnuradio into next
core: protect against popping a message off the queue if no handler is attached.

This mostly solves a problem with threads being launched in random
order, so a handler might not be established yet, even if there is a
message waiting. Fixes Issue #514.
Merge branch 'maint'

Conflicts:
	gnuradio-core/gnuradio-core.conf
core: moving over setting of max_messages option to conf.in file.

blocks: these timers were actually doing much, so we can speed up the tests.
Merge branch 'master' into next

Conflicts:
	gnuradio-core/src/python/gnuradio/gr/qa_pdu.py
Merge branch 'next' of gnuradio.org:gnuradio into next
filter: imporint firdes from gr-filter; no longer in gnuradio-core.
blocks: moved fxpt generators to gr-blocks.

Added C++ QA test setup.
blocks: moving vco/nco bases to gr-blocks.
Merge branch 'master' into next
blocks: removed all nco/vco and fxpt stuff from core; now in gr-blocks.

Moved the nco/vco tests to gr-blocks/test and enabled them.