dmtcp_inspector
1. Add host processes grouping together in subgraph
2. Remove excessive connection circles (no circle for non-shared 
connections)
dmtcp_inspector:
1. Move all loopback connections (all communicated processes are at one 
host) inside subgraph.
Minor modifications and polishing.  For example:  pkill -9 testmtcp
was needed instead of "pkill testmtcp".
dmtcp_inspector:
1. Add automatic dot pipeing
2. Use UniquePid
3. Different verbose level
- Fixed autotest.py for CERN systems
dmtcp_inspector.
1. Add Parent-Child relationship representation
2. Add command-line options to disable connections or parent-child 
relations drawing
fix com. line option
- Reverted parts of r156:
  * Changes to echoserver that broke `make check`
  * No-op formatting changes
- Moved setting for UnqiuePid::ParentProcess() from fork_wrapper to ResetOnFork.
- Converted some tabs to spaces
Modified MTCP again to take care of latest Red Hat patches:  Linux 2.6.9-67
MTCP works again for latest Linux 2.6.9, while not hurting Debian Linux 2.6.25
(and hopefully other newer Linuxes).
In addition, in MTCP, "make M32=1" now creates a 32-bit MTCP implementation
  for 64-bit machines.  This is important to some users who run
  32-bit code on latest hardware for backwards compatibility.
I have not yet integrated this with a general "M32=1" mode for the make in all
  of DMTCP (or added automatic detection of "linux32 make").  That will come
  later after more testing.
- Fixed configure for readline.so.4
- Renamed configure.in to configure.ac
- Changed default host from "localhost" to "127.0.0.1"
- Added dmtcp2 test case
- Reverted some leftover debugging code from r156 (fixes dmtcp2 issue)
dmtcp_inspector
- added test dmtcp3, pthread_cond_wait stress test
- improved dmtcp3 test
- Reduced the size of dmtcp3 so it runs faster
- Added full set of command line options to coordinator, checkpoint, and command
- Added --background, and --exit-on-last modes to dmtcp_coordinator
- Made dmtcp_checkpoint start coordinator automatically when one doesn't exist
    * `dmtcp_checkpoint --no-check foo` to get old behavior
- Improved --help messages
- Made MTCP set signal handler more often
Minor fixes.
- Renamed class CheckpointCoordinator to ConnectionState (to avoid confusion
  with dmtcp_coordinator)
- Rename dmtcp{checkpoint,coordinator,restart}.cpp to
  dmtcp_{checkpoint,coordinator,restart}.cpp (to match program names)
- Added test dmtcp4, that sets/blocks signals
- Added wrappers around many signal-related functions to block access to SIGUSR2
- Made ConId's print in decimal mode
- Changed JASSERT to JWARNING for stale connections on restart
- Added support for changing coordinator address on restart
- Made dmtcp_restart start a coordinator automatically
- Added command line options to dmtcp_restart, similar to dmtcp_checkpoint's
- Improved dmtcp_restart_script.sh, special cased single-host computations to remove 'ssh'
- Fixed compilation bug (typo)
- Made dmtcpinspector.cpp compile with "-Wall -Werror"