patch 8.0.1473: MS-Windows: D&D fails between 32 and 64 bit apps

Problem:    MS-Windows: D&D fails between 32 and 64 bit apps.
Solution:   Add the /HIGHENTROPYVA:NO linker option. (Ken Takata, closes #2504)
diff --git a/src/Make_mvc.mak b/src/Make_mvc.mak
index b496e5a..c2e808c 100644
--- a/src/Make_mvc.mak
+++ b/src/Make_mvc.mak
@@ -1179,6 +1179,13 @@
 !endif
 !endif
 
+!if $(MSVC_MAJOR) >= 11 && "$(CPU)" == "AMD64" && "$(GUI)" == "yes"
+# This option is required for VC2012 or later so that 64-bit gvim can
+# accept D&D from 32-bit applications.  NOTE: This disables 64-bit ASLR,
+# therefore the security level becomes as same as VC2010.
+LINKARGS1 = $(LINKARGS1) /HIGHENTROPYVA:NO
+!endif
+
 all:	$(VIM).exe \
 	vimrun.exe \
 	install.exe \
diff --git a/src/version.c b/src/version.c
index 5c4e17b..8f34303 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1473,
+/**/
     1472,
 /**/
     1471,