Changes in this release:
Minimized and isolated constructs that do not adhere to C/C++
standards, and added flags NTL_CLEAN_INT and NTL_CLEAN_PTR
which force stricter compliance with these standards
Added functions IsWhiteSpace, CharToIntVal,
and IntValToChar to the tools module
Added methods allocated, position1 to generic vector classes
Added method allocated to the class vec_GF2
Added conversion routines from unsigned int/long to int, long, float,
and double
Added routines AddPrec, SubPrec, etc., to the RR
module, and declared the practice of directly assigning to the variable
RR::prec obsolete
Fixed a number of minor bugs.
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