THRIFT-500. Ignore and clean some new generated files

r772440 caused libtoolize to dump some extra files into aclocal.
This change adds them to gitignore and removes them in cleanup.sh.

git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@991243 13f79535-47bb-0310-9956-ffa450edef68
2 files changed