python3: Update to 3.7.4, make python3 default python

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

@@ -55,7 +55,7 @@
  # 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 @@
+@@ -41,12 +53,16 @@
  LIBC="@LIBC@"
  SYSLIBS="$LIBM $LIBC"
  ABIFLAGS="@ABIFLAGS@"
@@ -66,12 +66,10 @@
  LIBS="-lpython${VERSION}${ABIFLAGS} @LIBS@ $SYSLIBS"
  BASECFLAGS="@BASECFLAGS@"
 -LDLIBRARY="@LDLIBRARY@"
--LINKFORSHARED="@LINKFORSHARED@"
  OPT="@OPT@"
  PY_ENABLE_SHARED="@PY_ENABLE_SHARED@"
  LDVERSION="@LDVERSION@"
 +LDLIBRARY="@LDLIBRARY@"
-+LINKFORSHARED="@LINKFORSHARED@"
  LIBDEST=${prefix_real}/lib/python${VERSION}
  LIBPL=$(echo "@LIBPL@" | sed "s#$prefix#$prefix_real#")
  SO="@EXT_SUFFIX@"
@@ -121,8 +119,8 @@
              if [ "$PY_ENABLE_SHARED" = "0" ] ; then
                  LIBPLUSED="-L$LIBPL"
              fi
--            echo "$LIBPLUSED -L$libdir $LIBS $LINKFORSHAREDUSED"
-+            echo -ne "$LIBPLUSED -L$libdir $LIBS $LINKFORSHAREDUSED "
+-            echo "$LIBPLUSED -L$libdir $LIBS"
++            echo -ne "$LIBPLUSED -L$libdir $LIBS "
          ;;
          --extension-suffix)
 -            echo "$SO"