Patch for building doc under Windows

[Michael Goffioul]

Hi,

I'd like to propose the attached patch to solve various problems I've
always had when building documentation. One part of the patch makes
use of the correct sepchar to build TEXINPUTS value. The other one
tries to avoid the use of "--output" argument, because it is not supported
under MiKTeX.

Note: I completely dropped the texi2[dvi|pdf] versions of MSYS or
GnuWin32, because they do not work well with MiKTeX and switched
to the texi2dvi provided by MiKTeX; hence the COMSPEC unsetting
trick should not be needed anymore.

Michael.

makedoc.diff
Description: Text document