The "-extdirs" does not work - actually arguments to extdirs are effectively
ignored and flag causes standard extensions not to be found.

Because code is shared this also effects javadoc.
robert.field@Eng 1998-08-06

To reproduce:
% cd /tmp
% mkdir q
% cd q
% cat > Frog.java
public class Frog {
        public int rat;
}
% javac Frog.java
% jar cf toad.jar Frog.class
% rm Frog.class
% cd
% cat > Y.java
public class Y extends Frog {
}
% javac -extdirs /tmp/q Y.java
Y.java:1: Superclass Frog of class Y not found.
public class Y extends Frog {
                       ^
1 error

           --- fix the bug here ---

% javac -extdirs /tmp/q Y.java
%
robert.field@Eng 1998-08-06