Provide get_include()

xbob.io @ b919404d

-Subproject commit 7892708682bea5855818809ea6340d26c7c7f389
+Subproject commit b919404de7021dd8b401a0f384e68756eda8f6da

xbob/learn/activation/__init__.py

 from ._library import *
 from ._library import __version__, __api_version__
+
+def get_include():
+  """Returns the directory containing the C/C++ API include directives"""
+
+  return __import__('pkg_resources').resource_filename(__name__, 'include')