Merge pull request #977 from bigplaice/update_pg_dump_for_v5

Fix the pg_dump for IvorySQL 5.0

Merge pull request #861 from OreoYang/IVORY_REL_4_STABLE

 fix #836 test_extension are wrongly compiled and installed

Merge pull request #821 from jiaoshuntian/update_copyright_ivy4

IvorySQL:Add Notice

Merge pull request #818 from jiaoshuntian/update_copyright_ivy4

IvorySQL:Add missing copyright info

Merge pull request #816 from jiaoshuntian/update_copyright_ivy4

IvorySQL:Update copyright