Fixed up configure.ac to use newer/recommended automake init. Removed a set of unused version-setting variables. Set the variable for gnu ld lib versioning.
Fixed up configure.ac to use newer/recommended automake init. Removed a set
of unused version-setting variables. Set the variable for gnu ld lib versioning.

trondn/libmemcached,trondn/libmemcached,trondn/libmemcached,trondn/libmemcached,trondn/libmemcached