Added linux detection.
Added linux detection.

hehui199135/python-spidermonkey,tempbottle/python-spidermonkey,davisp/python-spidermonkey,tempbottle/python-spidermonkey,davisp/python-spidermonkey,hehui199135/python-spidermonkey,hehui199135/python-spidermonkey,davisp/python-spidermonkey,tempbottle/python-spidermonkey,tempbottle/python-spidermonkey,hehui199135/python-spidermonkey