added windows version of vpcd driver

based on Fabio Ottavi's UMDF Driver for a Virtual Smart Card Reader, see
http://www.codeproject.com/Articles/134010/An-UMDF-Driver-for-a-Virtual-Smart-Card-Reader

virtualsmartcard/win32/vpcd/makefile.inc

@@ -0,0 +1,8 @@
+.SUFFIXES: .inx
+
+STAMP=stampinf
+
+.inx{$(OBJ_PATH)\$(O)}.inf:
+    copy $(@B).inx $@
+    $(STAMP) -f $@ -a $(_BUILDARCH) -k $(KMDF_VERSION_MAJOR).$(KMDF_VERSION_MINOR) -u $(UMDF_VERSION_MAJOR).$(UMDF_VERSION_MINOR).0
+