exclude mstress_client from ALL

Do not build mstress_client unless the target is specifically required,
and remove the corresponnding install command.
add custom CMake target for mstress Java build

Build a jar file that contains the Java dependencies of the HDFS client.
create a bundled tgz of the mstress benchmark

Copy scripts into build directory and create a tar with the clients.
update test procedure

Rename the install script, remove a deprecated script, and update the README.
update mstress.py to use the bundled jar