Snippets for sbcl 2.6.7 from Alpine ppc64le

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-ppc64le/community/sbcl/sbcl-2.6.7-r0.log.

• ppc-linux-os.c:122:11: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
    122 |     d = *((double *) &control);
        |          ~^~~~~~~~~~~~~~~~~~~~
  

• /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>
        |  ^~~~~~~