Add a separate python3.9 package

Based on #8278

mingw-w64-python3.9/0500-add-python-config-sh.patch

@@ -0,0 +1,143 @@
+diff -Naur Python-3.8.0-orig/Misc/python-config.sh.in Python-3.8.0/Misc/python-config.sh.in
+--- Python-3.8.0-orig/Misc/python-config.sh.in	2019-10-14 16:34:47.000000000 +0300
++++ Python-3.8.0/Misc/python-config.sh.in	2019-10-22 10:02:24.584090700 +0300
+@@ -1,32 +1,44 @@
+ #!/bin/sh
+ 
+-# Keep this script in sync with python-config.in
+-
+ exit_with_usage ()
+ {
+     echo "Usage: $0 --prefix|--exec-prefix|--includes|--libs|--cflags|--ldflags|--extension-suffix|--help|--abiflags|--configdir|--embed"
+-    exit $1
++    exit 1
+ }
+ 
++# Really, python-config.py (and thus .sh) should be called directly, but
++# sometimes software (e.g. GDB) calls python-config.sh as if it were the
++# Python executable, passing python-config.py as the first argument.
++# Work around that oddness by ignoring any .py passed as first arg.
++case "$1" in
++    *.py)
++        shift
++    ;;
++esac
++
+ if [ "$1" = "" ] ; then
+-    exit_with_usage 1
++    exit_with_usage
+ fi
+ 
+ # Returns the actual prefix where this script was installed to.
+ installed_prefix ()
+ {
+-    RESULT=$(dirname $(cd $(dirname "$1") && pwd -P))
+-    if which readlink >/dev/null 2>&1 ; then
+-        if readlink -f "$RESULT" >/dev/null 2>&1; then
+-          RESULT=$(readlink -f "$RESULT")
+-        fi
++    local RESULT=$(dirname $(cd $(dirname "$1") && pwd -P))
++    if [ $(which readlink) ] ; then
++        RESULT=$(readlink -f "$RESULT")
++    fi
++    # Since we don't know where the output from this script will end up
++    # we keep all paths in Windows-land since MSYS2 can handle that
++    # while native tools can't handle paths in MSYS2-land.
++    if [ "$OSTYPE" = "msys" ]; then
++        RESULT=$(cd "$RESULT" && pwd -W)
+     fi
+     echo $RESULT
+ }
+ 
+ prefix_real=$(installed_prefix "$0")
+ 
+-# Use sed to fix paths from their built-to locations to their installed-to
++# Use sed to fix paths from their built-to locations to their installed to
+ # locations. Keep prefix & exec_prefix using their original values in case
+ # they are referenced in other configure variables, to prevent double
+ # substitution, issue #22140.
+@@ -41,13 +53,17 @@
+ LIBC="@LIBC@"
+ SYSLIBS="$LIBM $LIBC"
+ ABIFLAGS="@ABIFLAGS@"
++# Protect against lack of substitution.
++if [ "$ABIFLAGS" = "@""ABIFLAGS""@" ] ; then
++    ABIFLAGS=
++fi
+ LIBS="@LIBPYTHON@ @LIBS@ $SYSLIBS"
+ LIBS_EMBED="-lpython${VERSION}${ABIFLAGS} @LIBS@ $SYSLIBS"
+ BASECFLAGS="@BASECFLAGS@"
+-LDLIBRARY="@LDLIBRARY@"
+ OPT="@OPT@"
+ PY_ENABLE_SHARED="@PY_ENABLE_SHARED@"
+ LDVERSION="@LDVERSION@"
++LDLIBRARY="@LDLIBRARY@"
+ LIBDEST=${prefix_real}/lib/python${VERSION}
+ LIBPL=$(echo "@LIBPL@" | sed "s#$prefix#$prefix_real#")
+ SO="@EXT_SUFFIX@"
+@@ -61,7 +77,7 @@
+ do
+     case $ARG in
+         --help)
+-            exit_with_usage 0
++            exit_with_usage
+         ;;
+         --embed)
+             PY_EMBED=1
+@@ -69,7 +85,7 @@
+         --prefix|--exec-prefix|--includes|--libs|--cflags|--ldflags|--extension-suffix|--abiflags|--configdir)
+         ;;
+         *)
+-            exit_with_usage 1
++            exit_with_usage
+         ;;
+     esac
+ done
+@@ -80,37 +96,37 @@
+ 
+ for ARG in "$@"
+ do
+-    case "$ARG" in
++    case $ARG in
+         --prefix)
+-            echo "$prefix_real"
++            echo -ne "$prefix_real"
+         ;;
+         --exec-prefix)
+-            echo "$exec_prefix_real"
++            echo -ne "$exec_prefix_real "
+         ;;
+         --includes)
+-            echo "$INCDIR $PLATINCDIR"
++            echo -ne "$INCDIR $PLATINCDIR"
+         ;;
+         --cflags)
+-            echo "$INCDIR $PLATINCDIR $BASECFLAGS $CFLAGS $OPT"
++            echo -ne "$INCDIR $PLATINCDIR $BASECFLAGS $CFLAGS $OPT"
+         ;;
+         --libs)
+-            echo "$LIBS"
++            echo -ne "$LIBS"
+         ;;
+         --ldflags)
+             LIBPLUSED=
+             if [ "$PY_ENABLE_SHARED" = "0" ] ; then
+                 LIBPLUSED="-L$LIBPL"
+             fi
+-            echo "$LIBPLUSED -L$libdir $LIBS"
++            echo -ne "$LIBPLUSED -L$libdir $LIBS "
+         ;;
+         --extension-suffix)
+-            echo "$SO"
++            echo -ne "$SO "
+         ;;
+         --abiflags)
+-            echo "$ABIFLAGS"
++            echo -ne "$ABIFLAGS "
+         ;;
+         --configdir)
+-            echo "$LIBPL"
++            echo -ne "$LIBPL "
+         ;;
+ esac
+ done