[newlib-cygwin] Cygwin: add 3.1.2 release text

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=b42d5651504bc08e3637f5b8a5916602855052f7

commit b42d5651504bc08e3637f5b8a5916602855052f7
Author: Corinna Vinschen <corinna@vinschen.de>
Date:   Sat Dec 21 11:44:08 2019 +0100

    Cygwin: add 3.1.2 release text
    
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/cygwin/release/3.1.2 | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/winsup/cygwin/release/3.1.2 b/winsup/cygwin/release/3.1.2
new file mode 100644
index 0000000..5c84eb3
--- /dev/null
+++ b/winsup/cygwin/release/3.1.2
@@ -0,0 +1,7 @@
+Bug Fixes
+---------
+
+- Fix an infinite loop in the pseudo console code.
+  Addresses: https://www.cygwin.com/ml/cygwin/2019-12/msg00173.html.
+
+- Bordercase formatting fixes in fcvt and gcvt.