scummvm: add version 1.1.1

scummvm: add version 1.1.1

*removed the useless CCACHE=""
*do_configure_append is still necessary,else you still have issues
  like that:
    | sound/rate_arm_asm.s:713: Error: no such instruction: `ldr PC,[r13,'
*I took the following from DJWillis(John Willis)'s recipe(he sent it to me via mail)
  # Make this a plugin enabled build. Bigger binary, less memory usage. Makes more games run on lower end platforms.
  # These plugins are not normal Linux shared libs so will fall foul of the sanity checker.
  INSANE_SKIP_${PN} = True
  EXTRA_OECONF += " --enable-plugins --default-dynamic "
The comment are self explanatory
Thanks a lot John Willis(who is a scummvm developer)