fixed issue 731, 740, and more.

commit 0b46141bea8d503896dc06308f102131df2e4f3d
Author: Young-Seok <kisskys@gmail.com>
Date:   Tue May 20 12:52:54 2014 -0700

    fixed issues of access method rules that try to use incompatible indexes and similarity functions

commit a0ea4e411503de265f1883aa3837a45be4a8747a
Merge: bb8fe91 b5785a9
Author: Young-Seok <kisskys@gmail.com>
Date:   Sun May 18 13:00:33 2014 -0700

    merged from master branch to kisskys/left-outer-join-issue branch

commit bb8fe91ffd4fec3d495d32442020447693be8548
Author: Young-Seok <kisskys@gmail.com>
Date:   Sun May 18 11:33:54 2014 -0700

    another fix for picking available index for leftouterjoin plan

commit 60b057ecec6a157e3e11cb316ef7d38601483741
Merge: a743e44 6cb7fd9
Author: Young-Seok <kisskys@gmail.com>
Date:   Sun May 11 22:22:42 2014 -0700

    merged master to kisskys/left-outer-join-issue branch

commit a743e4493f0f84f7a71e671478592d487e7510e3
Author: Young-Seok <kisskys@gmail.com>
Date:   Sun May 11 20:51:50 2014 -0700

    changes for left-outer-join to pick available indexes

Change-Id: I0d89d20c6cc076f40d1fbc5687f0b70e49a91eed
Reviewed-on: http://fulliautomatix.ics.uci.edu:8443/33
Reviewed-by: Inci Cetindil <icetindil@gmail.com>
Tested-by: Ian Maxon <imaxon@uci.edu>
74 files changed