[PATCH] make, use mixed paths on cygwin, remove ugly paths conversion

Hello,

These patches allow us to get rid of path conversions in makefiles by
using cygpath -m format.
But this only works with make 3.82, so configure is also changed.
(Only for cygwin)
There are only few exceptions where we need cygpath -u format.

I am not sure if we want this now or later. (after libreoffice-3-6
branch is created ?)
Posting here, so you know about this and can push if that's good.

It should work without problems ;-)

HTH,
Matúš

Attachment: 0001-gbuild-use-mixed-paths-on-cygwin.patch
Description: Binary data

Attachment: 0002-gbuild-remove-gb_Helper_abbreviate_dirs_native.patch
Description: Binary data