python,python3: export mk files outside of python package dirs

Since `lang/python` is it's own folder of Python packages
(for both Python 2 & 3), and these build rules are needed
in a lot of packages [especially Python packages],
putting them here makes sense architecturally,
to be shared.

This also helps get rid of the `include_mk` construct
which relies on OpenWrt core to provide, and seems
like a broken design idea that has persisted for a while.
Reason is: it requires that Python 2/3 be built to provide
these mk files for other Python packages,
which seems like a bad idea.

Long-term, there could be an issue where some other feeds
would require these mk files [e.g. telephony] for
some Python packages.
We'll see how we handle this a bit later.

For now we limit this to this feed.

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

lang/python/python/Makefile

@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 # For PYTHON_VERSION
-include ./files/python-version.mk
+include ../python-version.mk
 
 PKG_NAME:=python
 PKG_VERSION:=$(PYTHON_VERSION).$(PYTHON_VERSION_MICRO)
@@ -22,10 +22,10 @@ PKG_LICENSE:=PSF
 PKG_LICENSE_FILES:=LICENSE Modules/_ctypes/libffi_msvc/LICENSE Modules/_ctypes/darwin/LICENSE Modules/_ctypes/libffi/LICENSE Modules/_ctypes/libffi_osx/LICENSE Tools/pybench/LICENSE
 
 # This file provides the necsessary host build variables
-include ./files/python-host.mk
+include ../python-host.mk
 
 # For PyPackage
-include ./files/python-package.mk
+include ../python-package.mk
 
 PKG_FIXUP:=autoreconf
 PKG_INSTALL:=1

lang/python/python3/Makefile

@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 # The file included below defines PYTHON_VERSION
-include ./files/python3-version.mk
+include ../python3-version.mk
 
 PYTHON_VERSION:=$(PYTHON3_VERSION)
 PYTHON_VERSION_MICRO:=$(PYTHON3_VERSION_MICRO)
@@ -25,10 +25,10 @@ PKG_LICENSE:=PSF
 PKG_LICENSE_FILES:=LICENSE Modules/_ctypes/libffi_msvc/LICENSE Modules/_ctypes/darwin/LICENSE Modules/_ctypes/libffi/LICENSE Modules/_ctypes/libffi_osx/LICENSE Tools/pybench/LICENSE
 
 # This file provides the necsessary host build variables
-include ./files/python3-host.mk
+include ../python3-host.mk
 
 # For Py3Package
-include ./files/python3-package.mk
+include ../python3-package.mk
 
 PKG_FIXUP:=autoreconf
 PKG_INSTALL:=1