[fpc-pascal] mpcalc 7.4

[franco at solaris.polarhome.com]

For anyone interested, a stable version 7.4 of mpcalc (unit for
multiple-precision floating-point computations) is now available:

ftp://ftp.freepascal.org/pub/fpc/contrib/mpcalc-7.4.zip
or http://www.polarhome.com/~franco/mpcalc-7.4.zip

Changes have been made to double factorial, ceil and floor functions.
Bug reports are always welcome. Thanks to everyone that has contributed
and to the fpc team.

Franco