Fix vc-x64 target having MACHINE= wrongly positioned, and added vc-x64-ssl-zlib

target as indicated end requested by Viktor Szakats in bug report #2872879.

Makefile.dist

@@ -130,9 +130,9 @@ vc:
 
 vc-x64:
 	cd lib
-	MACHINE=x64 nmake /f Makefile.$(VC) cfg=release
+	nmake /f Makefile.$(VC) MACHINE=x64 cfg=release
 	cd ..\src
-	MACHINE=x64 nmake /f Makefile.$(VC)
+	nmake /f Makefile.$(VC) MACHINE=x64 cfg=release
 
 vc-zlib:
 	cd lib
@@ -152,6 +152,12 @@ vc-ssl-zlib:
 	cd ..\src
 	nmake /f Makefile.$(VC) cfg=release-ssl-zlib
 
+vc-x64-ssl-zlib:
+	cd lib
+	nmake /f Makefile.$(VC) MACHINE=x64 cfg=release-ssl-zlib
+	cd ..\src
+	nmake /f Makefile.$(VC) MACHINE=x64 cfg=release-ssl-zlib
+
 vc-ssl-dll:
 	cd lib
 	nmake /f Makefile.$(VC) cfg=release-ssl-dll