cygwin/mingw experiences

[Ralf Wildenhues]

My cywgin/mingw session last night has taught me a couple of things
(note, I have been quite ignorant of these systems so far):

Concurrent read/write file access seems impossible on this platform.
I've used one CVS checkout for both platforms to build off of, which
resulted in desaster.

- ln can segfault (probably because it does not handle locked files
  nicely).  I don't remember if it was cygwin's or mingw's ln, sorry.
- config.status can segfault as well (no further details).
- something is broken in the Makefile rules that causes regeneration
  of toplevel aclocal.m4 during `make check', after
    reconfdirs=. ./bootstrap
  (on HEAD/branch-2-0).
  I suspect this is a timestamp resolution issue.

Regards,
Ralf