more standalone TerranBASIC executable build files

buildapp/tbaslinux_x86/AppRun

@@ -0,0 +1,3 @@
+#!/bin/bash
+cd "${0%/*}"
+./runtime-linux-x86/bin/java -Xms128M -Xmx2G -Dswing.aatext=true -Dawt.useSystemAAFontSettings=lcd -jar ./TerranBASIC.jar

buildapp/tbaslinux_x86/TerranBASIC.desktop

@@ -0,0 +1,6 @@
+[Desktop Entry]
+Name=TerranBASIC
+Exec=AppRun
+Icon=icns
+Type=Application
+Categories=Game;