Commits
[svn-r30226] Bring revisions #29603 - #29743 from trunk to page_buffering branch. In addition, clean up test/dsets.c, objcopy.c, unlink.c and fillval.c on the setting of file space strategy. Tested on mayll, platypus, osx1010test, emu, moohan, kituo, ostrich, kite, quail. The test failure: testpar/test_page_buffer_access (testpar/t_file.c) related to "entry_ptr->coll_access" still needs to be addressed.
