bump version numbers and add a news item for 2.6.1

IMPROVEMENTS

 Improvements in nano
 ====================
 
+Since 2.6.0:
+  - The ability to use negative numbers at the Go To Line prompt.
+
 Noteworthy changes since 2.2
 ----------------------------
   - The ability to comment/uncomment lines with a single keystroke (M-3).

NEWS

+2016.06.27 - nano 2.6.1 "Stampede" is chiefly a translation update, but also
+		adds one little feature (the ability to use negative numbers
+		with Go To Line: -1 meaning the first line from the bottom),
+		includes syntax highlighting for Rust, and fixes three tiny
+		bugs (but in such far corners of the editor that they aren't
+		even worth mentioning).
+
 2016.06.17 - nano 2.6.0 "Rubicon" fixes more than fifty little bugs -- and
 		some of them not so little.  It improves moving about in
 		the file browser, corrects failings of the internal spell

configure.ac

@@ -18,7 +18,7 @@
 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301,
 # USA.
 
-AC_INIT([nano], [2.6.0], [nano-devel@gnu.org], [nano])
+AC_INIT([nano], [2.6.1], [nano-devel@gnu.org], [nano])
 AC_CONFIG_SRCDIR([src/nano.c])
 AC_CANONICAL_HOST
 AM_INIT_AUTOMAKE

doc/man/nano.1

@@ -17,7 +17,7 @@
 .\"   Documentation License along with this program.  If not, see
 .\"   <http://www.gnu.org/licenses/>.
 .\"
-.TH NANO 1 "version 2.6.0" "June 2016"
+.TH NANO 1 "version 2.6.1" "June 2016"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 

doc/man/nanorc.5

@@ -17,7 +17,7 @@
 .\"   Documentation License along with this program.  If not, see
 .\"   <http://www.gnu.org/licenses/>.
 .\"
-.TH NANORC 5 "version 2.6.0" "June 2016"
+.TH NANORC 5 "version 2.6.1" "June 2016"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .SH NAME

doc/man/rnano.1

@@ -16,7 +16,7 @@
 .\"   Documentation License along with this program.  If not, see
 .\"   <http://www.gnu.org/licenses/>.
 .\"
-.TH RNANO 1 "version 2.6.0" "June 2016"
+.TH RNANO 1 "version 2.6.1" "June 2016"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .SH NAME

doc/texinfo/nano.texi

@@ -6,7 +6,7 @@
 
 @smallbook
 @set EDITION 0.4
-@set VERSION 2.6.0
+@set VERSION 2.6.1
 @set UPDATED June 2016
 
 @dircategory Editors
@@ -21,7 +21,7 @@
 @titlepage
 @title @code{nano}
 @subtitle a small and friendly text editor.
-@subtitle version 2.6.0
+@subtitle version 2.6.1
 
 @author Chris Allegretta
 @page