Merge branch 'maint'
Merge branch 'master' into next
core: fixed point sin/cos generator properly folds frequencies outside nyquist range to alias signal.
Merge branch 'maint'
Merge branch 'master' into next
volk: change minimum acceptable ORC version to 4.12 (in cmake and updating version in autotools).
Merge branch 'maint'
Merge branch 'master' into next

Conflicts:
	volk/config/orc.m4
digital: in narrowband examples, added the ability to change the channel bandwidth.

When the frequency factor is off significantly, the signal can be outside the range
of the channel filter. This allows a user to open up the filter to acquire these signals.
howto: fixed cmake project definition to include C.

Fixes a problem with finding PythonLibs.
Merge branch 'master' into next
volk: add include for config.h to cc file

volk_32f_s32f_convert_16i_a was also a problem,
previously volk_32f_s32f_convert_16i_u was fixed to have config.h.
I heard putting config h stuff into public headers was bad practice.
Including config.h into the generated cc file should fix this issue from now on.
volk: make both test cases look and function the same.
volk: fix for load prefs (config path)

1) add APPDATA to search path for windows
2) graceful fail and env vars not defined
volk: added volk as depedency for various components

    Its important to list the dependent libraries for a test
    so the library path can be correctly set.
    This is necessary on platforms without dynamic re-linking.
Implement conditionalized build for WIN32
Merge branch 'maint'
Merge branch 'master' into next
Merge branch 'gr-fcd'
Merge branch 'master' into next

Conflicts:
	config/Makefile.am
	configure.ac