more standalone TerranBASIC executable build files

buildapp/build_app_windows_x86.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+cd "${0%/*}"
+SRCFILES="tbaswindows_x86"
+DESTDIR="TerranBASIC_windows.x86.exe"
+RUNTIME="runtime-windows-x86"
+
+# Cleanup
+rm -rf $DESTDIR || true
+mkdir $DESTDIR
+
+# Prepare an application
+cp $SRCFILES/TerranBASIC.bat $DESTDIR/
+
+# Copy over a Java runtime
+cp -r "../out/$RUNTIME" $DESTDIR/
+
+# Copy over all the assets and a jarfile
+cp -r "../out/TerranBASIC.jar" $DESTDIR/
+
+# Temporary solution: zip everything
+zip -r -9 -l "out/$DESTDIR.zip" $DESTDIR
+rm -rf $DESTDIR || true
+echo "Build successful: $DESTDIR"