STYLE: adds do while rule

STYLE

@@ -47,7 +47,12 @@ use sysexits::{ EX_DATAERR, EX_IOERR, EX_UNAVAILABLE, EX_USAGE };
 - If a control flow statement is short enough to be easily understood in a
   glance, it may be placed on a single line:
 
-if (!argc < 0) { usage(program_name); }if (!(argc < 0)) { usage(program_name); }
+if (!argc < 0) { usage(program_name); }
+
+- If a do while loop in C is longer than ~25 lines, place the while statement
+  in a comment after the opening brace:
+
+do { /* while(count == 0 || --count > 0); */
 
 --
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