DMTCP-2.5.0 released

This release includes a few new plugins and several bug fixes for robustness.
Some of the highlights include:

• Support for InfiniBand UD (in addition to the more common InfiniBand RC).
• Added support for CMA (Cross-Memory Attach):
  process_vm_readv and process_vm_writev
• Improved multi-arch (mixed 32-/64- bit) support.
• Re-added --enable-fast-restart.
• Added a new commandline option --with-plugin-32 for dmtcp_launch to specify
  32-bit plugins in a 64-bit environment.
• Added --enable-pthread-mutex-wrappers configure flag to enable
  pthread_mutex_{lock,unlock} wrappers needed for Open MPI.
• Added ability to specify environment file used in the modify-env plugin.
• Allow dmtcp_restart to be invoked by root.
• The following new plugins were added:
• pathvirt: to virtualize filesystem paths.
• delayresume: for finer-grained control over resuming of user threads
  during resume/restart.