GitLab

Detail:
  * Some 32-bit unsafe instructions removed
  * Now runs on 26-bit systems again (passing on vectors branched to the
    wrong address!)
  * Added new SWI DDEUtils_FlushCL to allow a bugfix to system() in the
    shared C library
Admin:
  Tested on a 26-bit system.

Version 1.66. Tagged as 'DDEUtils-1_66'