
          Add Chinese (Simplified & Traditional) localization support

d6eb0d4

- Add language selection page in Options dialog (OptionsSubLanguage)
- Support switching between English, Simplified Chinese, Traditional Chinese,
  Japanese, Korean, German, French, Spanish, Russian
- Auto-reload localization files when language changes
- Create Simplified Chinese localization files:
  gameui_schinese.txt, valve_schinese.txt, platform_schinese.txt, vgui_schinese.txt
- Create Traditional Chinese localization files:
  gameui_tchinese.txt, valve_tchinese.txt, platform_tchinese.txt, vgui_tchinese.txt
- Android: auto-detect system language from system properties
- Android: fix JNI string leaks (release GetStringUTFChars)
- Android: use __system_property_get instead of popen(getprop)
- Android: use sysinfo() for memory detection
- Add FCVAR_ARCHIVE to cl_language so language setting persists