[cppyy] Help Windows locate libcppyy.so

Author: hageboeck

bindings/pyroot/cppyy/cppyy/python/cppyy/__init__.py

@@ -66,6 +66,10 @@
 from . import _typemap
 from ._version import __version__
 
+# Help Windows locate cppyy/libcppyy.so, which should be in the same location as the current file:
+if 'win32' in sys.platform:
+    os.add_dll_directory(os.path.dirname(__file__))
+
 # import separately instead of in the above try/except block for easier to
 # understand tracebacks
 if ispypy: