mingw: include the Python parts in the build

While Git for Windows does not _ship_ Python (in order to save on
bandwidth), MSYS2 provides very fine Python interpreters that users can
easily take advantage of, by using Git for Windows within its SDK.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

config.mak.uname

@@ -763,6 +763,7 @@ ifeq ($(uname_S),MINGW)
         ifneq (CLANGARM64,$(MSYSTEM))
 		USE_NED_ALLOCATOR = YesPlease
         endif
+	NO_PYTHON =
         ifeq (/mingw64,$(subst 32,64,$(subst clangarm,mingw,$(prefix))))
 		# Move system config into top-level /etc/
 		ETC_GITCONFIG = ../etc/gitconfig