[Ecls-list] Latest fixes

[Juan Jose Garcia Ripoll]

Critical ones:

* Incomplete support for binary streams. By default, streams are now of 
type CHARACTER which is equivalent to (UNSIGNED-BYTE 8). Streams of 
other types, such as UNSIGNED-BYTE, (UNSIGNED-BYTE 100), (SIGNED-BYTE 
2), etc, are also supported, but the size of the byte is (as of now) 
rounded up to a multiple of 8 and READ/WRITE-CHAR signal an error when 
applied on these streams.

Other fixes:

* Fixes in the evaluation order of arguments of INCF, DECF, etc. (M. 
Goffioul)

* Fixes related to the MSVC port (M. Goffioul)

Ideally, I should have not broken any old program in doing these 
changes, since the equivalence between CHARACTER and (UNSIGNED-BYTE 8) 
streams is preserved. However, the fix is incomplete and many functions 
have not yet been updated to larger byte sizes (for instance, 
FILE-POSITION).

Regards,

Juanjo