Compiler Option: -exx

Add error checking with Resume support and array bounds/dimensions and 
null-pointer checking, plus stack overflow checking with gas64 backend

Syntax
   -exx

Description
   The -exx compiler option adds error checking with Resume support, array 
   bounds and dimensions, and null-pointer checking (including the 
   procedure pointers), plus stack overflow checking with gas64 backend.

   Use of the -exx option automatically implies -e, -ex, -earray, 
   -earraydims, -elocation, and -enullptr, error checking and code 
   generation options.

Version
   * Before fbc 1.20.0, array dimensions were never checked.
   * Before fbc 1.10.0, stack overflow was never checked.

See also
   * __FB_ERR__
   * Compiler Option: -e
   * Compiler Option: -earray
   * Compiler Option: -earraydims
   * Compiler Option: -elocation
   * Compiler Option: -enullptr
   * Compiler Option: -ex
   * Error Handling
   * Using the Command Line

