Installing with autotools will now install everything needed to use vw as an installed library

Added required h files to nobase_include_HEADERS in Makefile.am and
removed htem from noinst_HEADERS
Merge pull request #206 from lendle/master

Installing with autotools will install additional header files needed to use vw as an installed library
minor tweaks
Merge branch 'master' of github.com:JohnLangford/vowpal_wabbit