Add PT_REGS_PARMx_SYSCALL helpers for all archs
Add PT_REGS_PARMx_SYSCALL helpers for all archs

brendangregg/bcc,brendangregg/bcc,brendangregg/bcc,iovisor/bcc,brendangregg/bcc,iovisor/bcc,brendangregg/bcc,iovisor/bcc,iovisor/bcc,iovisor/bcc