Bump Cygwin version to 2.0.0.

* include/cygwin/version.h (CYGWIN_VERSION_DLL_MAJOR): Bump to 2000.
	(CYGWIN_VERSION_DLL_MINOR): Set to 0.

	* new-features.xml (ov-new2.0): Rename from ov-new1.7.36 and change
	version number to 2.0.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

winsup/cygwin/release/2.0.0

@@ -0,0 +1,60 @@
+What's new:
+-----------
+
+- New, unified implementation of POSIX permission and ACL handling.  The
+  new ACLs now store the POSIX ACL MASK/CLASS_OBJ permission mask, and
+  they allow to inherit the S_ISGID bit.  ACL inheritance now really
+  works as desired, in a limited, but theoretically equivalent fashion
+  even for non-Cygwin processes.
+
+  To accommodate Windows default ACLs, the new code ignores SYSTEM and
+  Administrators group permissions when computing the MASK/CLASS_OBJ
+  permission mask on old ACLs, and it doesn't deny access to SYSTEM and
+  Administrators group based on the value of MASK/CLASS_OBJ when
+  creating the new ACLs.
+
+  The new code now handles the S_ISGID bit on directories as on Linux:
+  Setting S_ISGID on a directory causes new files and subdirs created
+  within to inherit its group, rather than the primary group of the user
+  who created the file.  This only works for files and directories
+  created by Cygwin processes.
+
+- basename(3) now comes in two flavors, POSIX and GNU.  The POSIX version is
+  the default.  You get the GNU version after
+
+    #define _GNU_SOURCE
+    #include <string.h>
+
+
+What changed:
+-------------
+
+- The maximum number of PTYs has been raised from 64 to 128.
+
+
+Bug Fixes
+---------
+
+- Fix potential hang in pseudo ttys when generating ECHO output while the slave
+  is flooding the pty with output.
+  Addresses: https://cygwin.com/ml/cygwin/2015-03/msg00019.html
+
+- Fix potential premature SIGHUP in pty code.
+  Addresses: https://cygwin.com/ml/cygwin/2015-03/msg00070.html
+
+- Fix a name change from symlink to target name in calls to execvp, system, etc.
+  Addresses: https://cygwin.com/ml/cygwin/2015-03/msg00270.html
+
+- Fix internal error in pty -ONLCR handling.  Fix timing bug in pty OPOST 
+  handling.
+  Addresses: https://cygwin.com/ml/cygwin/2015-02/msg00929.html
+
+- Avoid creating passwd and group records from fully qualified Windows
+  account names (domain\name, name@domain).
+  Addresses: https://cygwin.com/ml/cygwin/2015-03/msg00528.html
+
+- Avoid potential crash at startup or in getgroups(2).
+  Addresses: https://cygwin.com/ml/cygwin/2015-04/msg00010.html
+
+- Fix UTF-16 surrogate handling in wctomb and friends.
+  Addresses: https://cygwin.com/ml/cygwin/2015-03/msg00452.html