Update expected macosx target and fix patch

Author: zanieb

cpython-unix/patch-apple-cross-3.14.patch

@@ -42,6 +42,30 @@ index 58f54076ff2..a734260691a 100644
  	*-*-vxworks*)
  		_host_ident=$host_cpu
  		;;
+@@ -785,6 +809,23 @@ if test "$cross_compiling" = yes; then
+ 	_PYTHON_HOST_PLATFORM="$MACHDEP${_host_ident:+-$_host_ident}"
+ fi
+
++# The _PYTHON_HOST_PLATFORM environment variable is used to
++# override the platform name in distutils and sysconfig when
++# cross-compiling. On Apple, the platform name expansion logic
++# is non-trivial, including renaming MACHDEP=darwin to macosx
++# and including the deployment target (or current OS version if
++# not set). Here we always force an override based on the target
++# triple. We do this in all build configurations because historically
++# the automatic resolution has been brittle.
++case "$host" in
++aarch64-apple-darwin*)
++  _PYTHON_HOST_PLATFORM="macosx-${MACOSX_DEPLOYMENT_TARGET}-arm64"
++  ;;
++x86_64-apple-darwin*)
++  _PYTHON_HOST_PLATFORM="macosx-${MACOSX_DEPLOYMENT_TARGET}-x86_64"
++  ;;
++esac
++
+ # Some systems cannot stand _XOPEN_SOURCE being defined at all; they
+ # disable features if it is defined, without any means to access these
+ # features as extensions. For these systems, we skip the definition of
 @@ -1582,7 +1623,7 @@ if test $enable_shared = "yes"; then
        BLDLIBRARY='-Wl,+b,$(LIBDIR) -L. -lpython$(LDVERSION)'
        RUNSHARED=SHLIB_PATH=`pwd`${SHLIB_PATH:+:${SHLIB_PATH}}

src/validation.rs

@@ -489,7 +489,7 @@ static PLATFORM_TAG_BY_TRIPLE: Lazy<HashMap<&'static str, &'static str>> = Lazy:
         ("mips64el-unknown-linux-gnuabi64", "todo"),
         ("ppc64le-unknown-linux-gnu", "linux-powerpc64le"),
         ("s390x-unknown-linux-gnu", "linux-s390x"),
-        ("x86_64-apple-darwin", "macosx-10.9-x86_64"),
+        ("x86_64-apple-darwin", "macosx-10.15-x86_64"),
         ("x86_64-apple-ios", "iOS-x86_64"),
         ("x86_64-pc-windows-msvc", "win-amd64"),
         ("x86_64-unknown-linux-gnu", "linux-x86_64"),