* unrecognize -e option on various linux platform

 - Some old machine requiered the -e flag in front of echo to interpret correctly the \t command as a tab
- some new machine ignore -e and the make fail later
- The solution to both is to suppress the -e flag (done before) and replace \t by the ascii code \011

   Now, one should first execute the configure
   script and then run make

 * There is the possibility to pass as arguments
   of the configure script detector names, e.g:
   ./configure must2 cats
   
 * Moreover, there is the possibility to compile
   specific detectors, e.g: make must2

  environment variables.

* The $NPTOOL env. variable is now the only one to be defined for
  running the project.

* Add comments in the $NPTOOL/NPLib/liblist file to specify that
  this file is created automatically.

   + scripts are used to move header files, libraries to the include and
     lib directories
   + scripts are located in NPLib/scripts
   + liblist is know created on the fly and is removed from the NPTool 
     package

* Update NPL Makefile to include Paris and Shield detectors