Fix whitespace and use return not exit.
If convert program cannot be found, fail.
Merge branch 'makeflow-test'

* makeflow-test:
  If convert program cannot be found, fail.
  Fix whitespace and use return not exit.
Merge pull request #622 from dthain/build-cleanup

Build and test is now green and fast across all platforms.
Functional bugs fixed along the way:
- Very short tasks would sometimes be delayed up to 5 seconds.
- If the GPU detection script was not found, stray worker processes would be left behind.
Updated configure to work with irods 4.x.
Update irods read option to conform to the new API.
Updated install instructions and added details for building with irods.
Misc tweaks to install instructions for consistency.
Merge pull request #623 from dthain/parrot-irods

Parrot Support for iRODS-4.x
Use -- to separate summaries
Fix small memory leaks
Use struct buffer to read summaries.
Add measured resources to wq struct task.
Small summary print format changes
Adds rmsummary to python bindings.
Merge pull request #624 from btovar/resource_summaries_small_fixes

Resource summaries small fixes
Work Queue's Perl object-oriented bindings.

Use:

use Work_Queue;

my $q = Work_Queue->new($port);
$q->set_debug_flag('all');
$q->set_debug_config_file('dbg.txt');

$q->specify_name('project_name');

$q->enable_monitoring;

my $t = Work_Queue::Task->new($command);
$t->specify_input_file(local_name => 'some_name', remote_name => 'some_other_name');
$t->specify_output_file(local_name => 'some_name'); # Could be: $t->specify_output_file('some_name');

$q->submit($t);

...

my $stats = $q->stats;
print $stats->{tasks_running}, '\n';

...

$t = $q->wait(5);

...

my $resources = $t->resources_measured;
print $resources->{resident_memory}, '\n';

  # $q and $t are garbage-collected when out of scope.
Update perl example with new bindings.
Add name, catalog, and shutdown options to perl constructor.
Add pod documentation.

html availale at doc/api/html/work_queue_perl.html

or also at the shell:

$ perldoc Work_Queue