[hardware] Added support for the Acer Aspire easyStore H341

added:
  src/led_acerh341.h
    - Copy of src/led_acerh340.h created and modified for the Acer Aspire easyStore H341 according to the post
      by sparkvolt on http:mediasmartserver.net as seen here:
      http://www.mediasmartserver.net/forums/viewtopic.php?f=23&t=7720&sid=5f7634569b817c79e9fff21012e74f46&start=90#p94053

modified:
  src/mediasmartserverd.cpp
    - Added system vendor and product name detection to get_led_interface().
      Neccessary for adding H341 without breaking HPEX485.
    - Disabled SystemLed.