Re: [PATCH] Cygwin has trustable filemode

> The supported Cygwin distribution on supported Windows versions provides
> complete support for POSIX filemodes, so enable this by default. git as
> distributed by the Cygwin project is configured this way.
> 
> This fixes one testsuite failure:
> t3300 test 17 (diff-index -M -p with mode change quotes funny filename)
> 
> Historical notes: Cygwin version 1.7 supports Windows-XP and newer, thus 
> dropped support for all OS variants that lack NTFS and/or the full win32 
> api, and since late 1.5 development, Cygwin maps POSIX modes to NTFS ACLs 
> by default.  Cygwin 1.5 supported OS variants that used FAT as the native 
> file system, and had optional methods for providing POSIX file modes on 
> top of FAT12/16 and NTFS, though not FAT32.  Also, support for POSIX modes 
> on top of FAT were dropped later in 1.5.  Thus, POSIX filemode support 
> could not be expected by default on a Cygwin 1.5 installation, but is 
> expected by default on a 1.7 installation.
> 
> Signed-off-by: Mark Levedahl <mlevedahl@gmail.com>
> ---
> Junio - The above notes are more accurate than in my previous commit message,
> so if this commit survives into next/master, I would prefer this version as
> opposed to the one now on pu (da875762)