This is a "reduced" IDL 7.0 installation for being used with xop2.3

Note that not all IDL files are installed, in particular help files. 

xop2.3 needs three directories:
  
  ./bin
  ./resources
  ./lib  


THE ./lib DIRECTORY CONTAINS THE BIT-CODE FILES OBTAINED FROM THE
IDL .pro FILES. IT DOES NOT CONTAIN .pro FILES. THEREFORE, IT IS
DIFFERENT FROM THE ORIGINAL DIRECTORY IN IDL'S DISTRIBUTION. 
