Snippets for sbcl 2.6.7 from Alpine riscv64

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-riscv64/community/sbcl/sbcl-2.6.7-r0.log.

• riscv-linux-os.c:71:2: warning: #warning "Implement correct fp control." [-Wcpp]
     71 | #warning "Implement correct fp control."
        |  ^~~~~~~
  

• riscv-arch.c:52:2: warning: #warning "Implement." [-Wcpp]
     52 | #warning "Implement."
        |  ^~~~~~~
  

• riscv-arch.c:58:2: warning: #warning "Implement." [-Wcpp]
     58 | #warning "Implement."
        |  ^~~~~~~
  

• riscv-arch.c:63:2: warning: #warning "Implement." [-Wcpp]
     63 | #warning "Implement."
        |  ^~~~~~~
  

• /usr/include/sys/termios.h:1:2: warning: #warning redirecting incorrect #include <sys/termios.h> to <termios.h> [-Wcpp]
      1 | #warning redirecting incorrect #include <sys/termios.h> to <termios.h>
        |  ^~~~~~~