Added a unit test.
Check CXX before CC in order to have the compiler validation checks in
_AC_COMPILER_EXEEXT apply to CXX instead of CC.  This will address the
concerns expressed in
https://github.com/adaptivecomputing/torque/pull/112

Also fixed --disable-gcc-warnings which didn't work at all.
added unit test.
Make AM_PROG_AR conditional on its existance.
Added unit test.
TRQ-1776. Don't allow jobs to be stuck forever when a sister doesn't respond to a kill or abort job request. Previously, mother superior would wait indefinitely to receive a response from each of the sister nodes confirming that the job is dead. Instead, consider the job dead after 10 minutes and clean it up. This time can be controlled by setting $job_exit_wait_time in the mom's config. The time should be specified in seconds but will control how long mother superior waits before calling the job dead and sending the obit to pbs_server.
Merge branch '4.2-dev' of https://github.com/adaptivecomputing/torque into 4.2-dev
Added  unit test.
Merge branch '4.2-dev' of https://github.com/adaptivecomputing/torque into 4.2-dev
Merge fix from 4.1-dev for trq-1531: Job running in queue that is not started.
Merge branch '4.2-dev' of https://github.com/adaptivecomputing/torque into 4.2-dev
Merge fix from the 4.1-dev branch for TRQ-1318: pbs_server --version should show its git hash.
Merge branch '4.2-dev' of https://github.com/adaptivecomputing/torque into 4.2-dev
Break out error cases into different logging messages in req_jobobit().
Merge pull request 118 from Matt Ezell back into this dev branch. This makes sure that pbs_server doesn't get confused with recycled ALPS ids and mark the wrong jobs as orphaned.
Merge branch '4.2-dev' of https://github.com/adaptivecomputing/torque into 4.2-dev
Merge pull request #114 from kainx/4.2-dev

Check CXX before CC in order to have the compiler validation checks in
added unit test for tree
Merge branch '4.2-dev' of https://github.com/adaptivecomputing/torque into 4.2-dev
Fixed a unit test break.