Created branch bug_correct_linux_physical_processor_count from master
under linux, physical core count is number of physicals * cores/physical
some processors (eg Sun Niagras) have more than two logicals per physical core; fix spec to allow this
handle case where cores not visible in /proc/cpuinfo
slightly more encompassing fall back logic
cover all host_oses with fall back
Merge pull request #67 from dbenhur/bug_correct_linux_physical_processor_count

Correct linux physical processor count