[Ecls-list] Summary of recent changes in CVS

[Juan Jose Garcia-Ripoll]

* Errors fixed:

  - When installing, ECL would not build all required directories.

  - Symbol BUILD-PROGRAM should be exported from package C.

* System design:

  - Global variables READsuppress, READdefault_float_format,
    READtable, and READbase have been removed. The corresponding
    special variables are used instead.

  - No need for function read_object_recursive(), since read_object()
    is equivalent to it.

  - Changed the algorithm of the list reader. A dot which is not
    escaped is read as a symbol SI::. which is recognized by
    LEFT-PARENTHESIS-READER. This avoids using global variables
    "in_list_flag" and "dot_flag".

* Visible changes:

  - New functions SI:SAFE-EVAL and cl_safe_eval() allow the user to
    evaluate code with errors without jumping into the
    debugger. Useful when embedding ECL in other programs.

* ANSI compatibility:

  - READ and READ-PRESERVING-WHITESPACE behave the same when
    RECURSIVE-P is NIL. Furthermore, EOF is detected when EOF-ERROR-P
    is true, regardless of the value of RECURSIVE-P.

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