blocks: Added tag gate
digital: OFDM passes all tests
utils: fix modtool template output signature
Merge branch 'maint'
Merge branch 'master' into next
Merge branch 'master-ofdm', fixed conflicts
Merge remote-tracking branch 'martin/master-ofdm2'
Merge remote-tracking branch 'martin/next-ofdm2' into next
Merge branch 'master' into next
Merge branch 'next' into runtime_pimpl

Conflicts:
	gr-blocks/swig/blocks_swig0.i
	gr-digital/lib/ofdm_chanest_vcvc_impl.cc
	gr-digital/lib/ofdm_frame_equalizer_vcvc_impl.cc
	gr-digital/lib/ofdm_frame_equalizer_vcvc_impl.h
	gr-digital/lib/ofdm_sync_sc_cfb_impl.cc
	gr-digital/lib/packet_header_default.cc
	gr-digital/lib/packet_headerparser_b_impl.cc