[Bug-apl] errors in latest SVN

[Peter Teeson]

/Volumes/Data/Development/MyProjects/GNUAPL/apl-svn/src/Parallel.cc:181:1: 
Unknown type name 'cpu_set_t'
/Volumes/Data/Development/MyProjects/GNUAPL/apl-svn/src/Parallel.cc:197:55: Use 
of undeclared identifier 'cpu_set_t'
/Volumes/Data/Development/MyProjects/GNUAPL/apl-svn/src/Parallel.cc:323:1: 
Unknown type name 'cpu_set_t'