[newlib-cygwin] Update Cygwin release message text with latest bugfixes.

[Corinna Vinschen <corinna at sourceware dot org>]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=ddc91e5b2ba18f9b8d72a20a853f0e7525891a4f

commit ddc91e5b2ba18f9b8d72a20a853f0e7525891a4f
Author: Corinna Vinschen <corinna@vinschen.de>
Date:   Sun Mar 13 00:20:18 2016 +0100

    Update Cygwin release message text with latest bugfixes.
    
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/cygwin/release/2.5.0 | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/winsup/cygwin/release/2.5.0 b/winsup/cygwin/release/2.5.0
index d274319..cce579b 100644
--- a/winsup/cygwin/release/2.5.0
+++ b/winsup/cygwin/release/2.5.0
@@ -64,4 +64,15 @@ Bug Fixes
 - Don't spill network credentials of privileged user changing the user
   context via setuid method 1
   (https://cygwin.com/cygwin-ug-net/ntsec.html#ntsec-nopasswd1) into
-  user session
+  user session.
+  Addresses: https://cygwin.com/ml/cygwin/2016-02/msg00101.html
+
+- Fix bug in setvbuf resulting in overwriting data in line buffered IO
+  when writing after reading.
+  Addresses: https://cygwin.com/ml/cygwin/2016-03/msg00180.html
+
+- Fix typo in code converting Windows ACL to POSIX ACL, potentially
+  resulting in incorrect group permissions.  Self-observed.
+
+- Fix reading/writing ACLs on Samba shares when using RFC2307 mapped uid/gid
+  values.  Self-observed.