autotools: add files incorrectly excluded

These files need to be checked in.

tools/gnusrc/autoconf/doc/version.texi

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+@set UPDATED 24 April 2012
+@set UPDATED-MONTH April 2012
+@set EDITION 2.69
+@set VERSION 2.69

tools/gnusrc/automake/doc/version.texi

@@ -0,0 +1,4 @@
+@set UPDATED 17 June 2017
+@set UPDATED-MONTH June 2017
+@set EDITION 1.15.1
+@set VERSION 1.15.1