Effort to make Pike compile on native win32 using Mingw32. This patch 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