Cosmopolitan v3.9.7

• 4e9566c Invent new cosmo_args() api
• 9ddbfd9 Introduce cosmo_futex_wait and cosmo_futex_wake
• 5c3f854 Fix strcasestr()
• abdf6c9 Sync with jtckdint
• e228aa3 Save rax register in getcontext
• fd15b2d Ensure ^C gets printed to Windows console
• ad0a7c6 [redbean] Add details to OnError Hook (#1324)
• 1312f60 Strongly link tr and sed into system() and popen()
• cafdb45 Strongly link glob() into system() and popen()
• e47d67b Add asteroids game