Remove autogen.sh, since you can just use autoreconf instead.

Ran autoreconf and fixed a couple of issues that popped up in
configure.ac and m4/ac_rwlock.m4.  This updates the configuration
files to automake/aclocal 1.11.1 (from 1.10.1) and to autoconf 2.65
(from 2.61).


git-svn-id: https://google-glog.googlecode.com/svn/trunk@93 eb4d4688-79bd-11dd-afb4-1d65580434c0