Thrift: Prep for release.

Thrift: Prep for release.

Summary:
- make dist is no fun.  Had to add a lot of stuff to Makefile.am to
  make sure stuff got included in the tarball.
- Added a permanent NEWS file with the release notes for this release.
- clean.sh removes ylwrap also.
- Gave it a real version for make dist.
- Added ACLOCAL_AMFLAGS to lib/cpp/Makefile.am to make it easier to
  work on configure.ac.
- Made concurrency_test a non-installed binary because
  no one wants to install it.
- Dropped some symlinks that were annoying make dist.
- Updated README.

Test Plan:
./bootstrap.sh && ./configure && make dist
Compared contents of tarball to source tree.
Did this from a fresh git tree so no gross untracked files would be around.
On devrs: ./bootstrap.sh && ./configure && make install DESTDIR=/tmp/relinst1
Made sure concurrency_test was built but not installed.
Checked zlib URL with firefox.

Reviewed By: mcslee

git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665274 13f79535-47bb-0310-9956-ffa450edef68