Big update to UHD 3.14, Gnuradio 3.8, Python 3.6. Not fully tested.

cmake/Modules/targetConfig.cmake.in

@@ -0,0 +1,26 @@
+# Copyright 2018 Free Software Foundation, Inc.
+#
+# This file is part of GNU Radio
+#
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# GNU Radio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+
+include(CMakeFindDependencyMacro)
+
+set(target_deps "@TARGET_DEPENDENCIES@")
+foreach(dep IN LISTS target_deps)
+    find_dependency(${dep})
+endforeach()
+include("${CMAKE_CURRENT_LIST_DIR}/@TARGET@Targets.cmake")