Fast integer arithmetic

[ramsdell@... (John D. Ramsdell)]

It occurs to me that number intensive applications that rely only on
integral computations would enjoy a strong performance boost if run on
top of a version of Lua that uses integers for all its numerical
operations, instead of computing with doubles, and converting the
results to integers.  A compile option to produce Lua binaries without
floating point instructions would create this faster version of Lua.
Perhaps performance is a more compelling motivation for supporting
floating point instruction free versions of Lua.

John