Revert Makefile change to remove embedding res_adsi.so

The change has resulted in a linking error for certain versions
of GCC. This is much worse than the original issue, so for now,
temporarily revert the change. A more thorough change will be
sought out.
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Merged revisions 368927 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 368928 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@368929 65c4cc65-6c06-0410-ace0-fbb531ad65f3