illumos gate

Building with gcc 7.1:

    aw.c: In function 'filter':
    aw.c:287:3: error: this statement may fall through [-Werror=implicit-fallthrough=]
       perror("fork");
       ^~~~~~~~~~~~~~
    aw.c:288:2: note: here
      default:
      ^~~~~~~
    aw.c: In function 'invoke':
    aw.c:412:3: error: this statement may fall through [-Werror=implicit-fallthrough=]
       perror("fork");
       ^~~~~~~~~~~~~~
    aw.c:413:2: note: here
      default:
      ^~~~~~~
Date:   Fri May 5 14:06:12 2017 +0300

    aw: this statement may fall through

    aw.c: In function 'filter':
    aw.c:287:3: error: this statement may fall through [-Werror=implicit-fallthrough=]
       perror("fork");
       ^~~~~~~~~~~~~~
    aw.c:288:2: note: here
      default:
      ^~~~~~~
    aw.c: In function 'invoke':
    aw.c:412:3: error: this statement may fall through [-Werror=implicit-fallthrough=]
       perror("fork");
       ^~~~~~~~~~~~~~
    aw.c:413:2: note: here
      default:
      ^~~~~~~
    cc1: all warnings being treated as errors