Added Windows DLL resource files
blocks: moving message blocks to gr-blocks.

message_burst_source, message_source, message_sink, message_debug, message_strobe.
blocks: moving peak_detector and moving_average to gr-blocks.
digital: Adding option to QAM to help with frequency locking.
digital: Making qa_constellation_receiver more reliable.
digital: Adding a QAM-like constellation with 32 points.
blocks: moving tag_debug block to gr-blocks.
Merge remote-tracking branch 'benreynwar/large_ampls_to_corners'
blocks: moved burst_tagger to gr-blocks.
blocks: moving bin_statistics_f into gr-blocks.

QA worked, but keeping disabled for now in reference to issue #199.
blocks: did my best to provide some documentation for the bin_statistics block.
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.