review(XS): 7082645: Hotspot doesn't compile on old linuxes after 7060836

[Igor Veresov]

Compilation fails because of the lack of syscall ids definitions and also because of the conflict of definitions of timespec-related structures. 

Webrev: http://cr.openjdk.java.net/~iveresov/7082645/webrev.00/

Thanks,
igor