add cleanup to remove dead code comments

Remove comments like
 /* foo(bar); */
and
 /* foo->bar = baz; */
and
 /* foo = bar->baz; */

This doesn't get rid of all dead code. As usual the result was visually
checked for false positives to ensure that no accidental content
removals occurred.

cleanup/cleanup.sh

@@ -43,6 +43,15 @@ sed -i 's|\(\s\+\)RET(\(.*\));|\1return \2;|' *.c
 sed -i 's|.*#define\s\+RET\(.*\).*||' *.h
 
 
+# remove dead code disguised as comments
+# weed out function calls first
+sed -i 's|/\*\s*.*(.*);.*\*/||g' *.c *.h
+# weed out assignments involving struct members
+sed -i 's|/\*\s*.*\..*=.*;.*\*/||g' *.c *.h
+sed -i 's|/\*\s*.*->.*=.*;.*\*/||g' *.c *.h
+sed -i 's|/\*\s*.*=.*->.*;.*\*/||g' *.c *.h
+
+
 # Insert new cleanup steps above this comment.
 # Keep Lindent as the last step.