Removed stale function declarations from jassert.h
Remove TRUE/FALSE macros.
Removed deprecated --mtcp-checkpoint-signal flag.
Removed unused macros from constants.h
Added tokenizeString() joinStrings() to dmtcp::Util.
Removed dmtcp_checkpoint symlink.
Removed {local,remote}Prefix from coordinator.

All processes must have the same prefixDir.
Removed --prefix from dmtcp_launch.
Removed JALIB_UTILITY environment variable.
Added SharedData::getInstallDir().
Updated preparation for dlsym offset env var.
Move FindHelperUtility to Util::getPath.
Use SharedData::installDir() to get dmtcp install dir.

This would allow us to use the current installDir upon restart instead
of using the hardwired one.
Fixed #18: Recalculate plugin paths on restart.
Fixed a rare segfault during process cleanup.

- See comments inside ckptThreadPerformExit() for more details.
Autotest: Updated coordinator status handling.
More elaborate coordinator status output.
Fixed ckpt interval bug in coordinator.

- The ckpt timer should be reset after completing ckpt/restart, and also
  after the checkpoint interval is updated by a new client.
Fixed minor compiler warning.
Removed copyright msg & -q flag for coordinator.