[Ecls-list] Important changes

[Juan Jose Garcia-Ripoll]

- The stream structure now stores FILE * and (int) handlers using a union type.

- Unicode strings are now arrays of the new ecl_character type, which
is defined to be an integer of 32 bits (int32_t). This reduces the
memory used by Unicode strings 50% on 64-bit platforms. I have checked
that ECL builds, and runs on my system, but there might be some typos
left due to this conversion.

- Sourceforge's CVS server is working again. These and other changes
have been uploaded today.

-- 
Instituto de Física Fundamental, CSIC
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