Merge branch 'msys2-python'

In MSYS2, we have two Python interpreters at our disposal, so we can
include the Python stuff in the build.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

config.mak.uname

@@ -673,6 +673,7 @@ else
 		USE_LIBPCRE = YesPlease
 		NO_CURL =
 		USE_NED_ALLOCATOR = YesPlease
+		NO_PYTHON =
 		ifeq (/mingw64,$(subst 32,64,$(prefix)))
 			# Move system config into top-level /etc/
 			ETC_GITCONFIG = ../etc/gitconfig