pdcurses: Add script to import PDCurses from upstream

Utilities/Scripts/update-pdcurses.bash

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+
+set -e
+set -x
+shopt -s dotglob
+
+readonly name="PDCurses"
+readonly ownership="PDCurses Upstream <kwrobot@kitware.com>"
+readonly subtree="Utilities/cmpdcurses"
+readonly repo="https://github.com/wmcbrine/PDCurses.git"
+readonly tag="f1cd4f4569451a5028ddf3d3c202f0ad6b1ae446"
+readonly shortlog=false
+readonly paths="
+  README.md
+  *.h
+  common/acs437.h
+  common/acsuni.h
+  pdcurses/README.md
+  pdcurses/*.c
+  wincon/README.md
+  wincon/*.c
+  wincon/*.h
+"
+
+extract_source () {
+    git_archive
+    pushd "${extractdir}/${name}-reduced"
+    echo "* -whitespace" > .gitattributes
+    popd
+}
+
+. "${BASH_SOURCE%/*}/update-third-party.bash"