Reorganize and add more dumps within opt/telephony

In particular dump is added to PhoneProxy which dumps
PhoneSubInfoProxy which dumps PhoneSubInfo this should
provide the desired information.

Also add some additional pw.flush() statements to
minimize the buffer overflows and truncate the output.

Conflicts:
        src/java/com/android/internal/telephony/PhoneFactory.java

Bug: 17545077
Change-Id: I44bead70d44255dfd5bc00a5b0a1dd1cbc640852