fdlib.h

does still have some problems. For example, detection of the fpclass
method under NT does not mean that the constants used are present. It
also lacks the correct translation of paths. There is still lots to be
done, but it is a start.

Rev: src/configure.in:1.832
Rev: src/fdlib.h:1.52
Rev: src/global.h:1.97
Rev: src/main.c:1.201
Rev: src/modules/system/nt.c:1.64
Rev: src/port.c:1.77
Rev: src/port.h:1.56
Rev: src/smartlink.c:1.16