runtime: fixed checks on vmcircbuf file and mutex locking for creation and usage of vmcrcbuf classes.
Merge branch 'master' of git.gnuradio.org:gnuradio
core: made strncmp instead of strcmp in case of new lines.
Merge branch 'maint'
wxgui: Fixes to solve issues using GL sinks on OS X

plotter/plotter_base.py:

* Create explicit OpenGL context, check if window is shown before
realising context & only create PaintDC is paint triggered by WM
message (OS paint event)

* Added SetSizeHints to WX sink windows so sizing occurs correctly
wxgui: fix issue with flickering on Linux created by bea6d506
cmake: make install directory of GNU Radio cmakes files configurable
blocks: fix big-endian issue in wavefile blocks
blocks: fix param test in keep_me_in_n GRC wrapper
core: ensure message passing blocks marked done are handled
Merge branch 'fix-wxgui-gl' into maint
Merge branch 'maint'

Conflicts:
	gnuradio-core/src/lib/runtime/gr_tpb_thread_body.cc
core: fir_filter_with_buffer using consistent error margins in all QA tests.

Addresses issue #553.
Merge branch 'maint'
ctrlport: fixed an issue where we weren't using a standard C++ way to set complex values.