fail after an "scontrol reconfigure".

Make slurm_addr slurm_conf_get_addr return an integer return code.

Remove unused variables in read_config.c.

requires that all source files be rebuilt if sysconfdir or pkglibdir
changes. 

Instead, src/common/Makefile now generates global_defaults.c, which 
contains global symbols "default_plugin_path" and "default_slurm_config_file"
which means that only this source file needs to be rebuilt, and
libcommon relinked when sysconfdir or pkglibdir are redefined.

Important bug fixed to increase default data block size.

Remove PathScale corp.

rather than return an error code).

Note: Changes to accounting software from Andy Riebs in requeue.patch
were not applied since the sofware was completely re-written in version
1.1, but some documentation changes were made and updates for AIX tests.