Add back python2-setuptools

This adds back a python 2 version of setuptools but with all dependencies vendored
(the upstream default..). To allow users to install Python 2 packages we no longer
have in the repo etc which should help them transitioning.

This also adds conflicts between py2/3 setuptools because of the esy_install rename.

See #4993

mingw-w64-python-setuptools/PKGBUILD

@@ -3,10 +3,9 @@
 
 _realname=setuptools
 pkgbase=mingw-w64-python-${_realname}
-pkgname="${MINGW_PACKAGE_PREFIX}-${_realname}"
 pkgname=("${MINGW_PACKAGE_PREFIX}-python3-setuptools")
 pkgver=42.0.2
-pkgrel=1
+pkgrel=2
 pkgdesc="Easily download, build, install, upgrade, and uninstall Python packages (mingw-w64)"
 arch=('any')
 license=('PSF')
@@ -17,6 +16,7 @@ depends=("${MINGW_PACKAGE_PREFIX}-python3>=3.3"
          "${MINGW_PACKAGE_PREFIX}-python3-ordered-set"
          "${MINGW_PACKAGE_PREFIX}-python3-appdirs"
          "${MINGW_PACKAGE_PREFIX}-python3-six")
+conflicts=("${MINGW_PACKAGE_PREFIX}-python2-setuptools<42.0.2")
 optdepends=("${MINGW_PACKAGE_PREFIX}-python3-certifi: Mozilla's CA Bundle support"
             "${MINGW_PACKAGE_PREFIX}-python3-wincertstore: Windows' cert store support")
 makedepends=("${MINGW_PACKAGE_PREFIX}-python3-certifi"