[newlib-cygwin] Cygwin: Document fegetenv patch

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=f16b198c3b033ae60af9efcb045ebf68361950ad

commit f16b198c3b033ae60af9efcb045ebf68361950ad
Author: Corinna Vinschen <corinna@vinschen.de>
Date:   Fri Aug 3 09:35:31 2018 +0200

    Cygwin: Document fegetenv patch
    
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/cygwin/release/2.11.0 | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/winsup/cygwin/release/2.11.0 b/winsup/cygwin/release/2.11.0
index e572271..2a90b1f 100644
--- a/winsup/cygwin/release/2.11.0
+++ b/winsup/cygwin/release/2.11.0
@@ -54,3 +54,6 @@ Bug Fixes
 
 - Make FP environment symbols available on x86_64.
   Addresses: https://cygwin.com/ml/cygwin/2018-07/msg00183.html
+
+- Fix fegetenv behaviour.
+  Addresses: https://cygwin.com/ml/cygwin/2018-08/msg00000.html