* config/win/cygwin.mk
* config/win/mingw.mk
* config/wce/mingwarm.mk
% Added -pipe option to win/gcc compilers, this way it's faster
(but consume more memory) since it passes intermediate files
- I could only spot the .s file - without writing them to disk.
Probably we should enable this on other platforms as well,
and if it works out well, also in hbmk2.