Reduce the footprint of ScanKeyword

    Attachment (warn-on-high-proc-oids.patch) at 2019-01-09 22:09:48 from John Naylor <john.naylor at 2ndquadrant.com> (Patch: Yes)
    Attachment (remove-num-kw-macro.patch) at 2019-01-09 21:37:28 from John Naylor <john.naylor at 2ndquadrant.com> (Patch: Yes)
    Attachment (adjust-case-option.patch) at 2019-01-09 21:09:32 from John Naylor <john.naylor at 2ndquadrant.com> (Patch: Yes)
    Attachment (make-fmgr-builtin-oid-index-smaller.patch) at 2019-01-09 19:44:24 from Tom Lane <tgl at sss.pgh.pa.us> (Patch: Yes)
    Attachment (perfect-hash-keyword-lookup-4.patch) at 2019-01-09 19:04:15 from Tom Lane <tgl at sss.pgh.pa.us> (Patch: Yes)
    Attachment (PerfectHash.pm) at 2019-01-08 22:53:25 from Tom Lane <tgl at sss.pgh.pa.us> (Patch: No)
    Attachment (perfect-hash-for-fmgr-oids-1.patch) at 2019-01-08 21:54:06 from Tom Lane <tgl at sss.pgh.pa.us> (Patch: Yes)
    Attachment (perfect-hash-keyword-lookup-3.patch) at 2019-01-08 20:04:36 from Tom Lane <tgl at sss.pgh.pa.us> (Patch: Yes)
    Attachment (perfect-hash-keyword-lookup-2.patch) at 2019-01-08 00:36:58 from Tom Lane <tgl at sss.pgh.pa.us> (Patch: Yes)
    Attachment (perfect-hash-keyword-lookup-1.patch) at 2019-01-07 21:11:04 from Tom Lane <tgl at sss.pgh.pa.us> (Patch: Yes)
    Attachment (crude-hack-for-perfect-hash-performance-test.patch) at 2019-01-06 19:29:05 from Tom Lane <tgl at sss.pgh.pa.us> (Patch: Yes)
    Attachment (offset-based-keyword-lookup-8.patch) at 2019-01-06 05:04:29 from Tom Lane <tgl at sss.pgh.pa.us> (Patch: Yes)
    Attachment (offset-based-keyword-lookup-7.patch) at 2019-01-06 03:48:51 from Tom Lane <tgl at sss.pgh.pa.us> (Patch: Yes)
    Attachment (keyword-nostruct.patch.gz) at 2019-01-04 20:46:32 from John Naylor <jcnaylor at gmail.com> (Patch: No)
    Attachment (v6-0001-Use-offset-based-keyword-lookup.patch) at 2019-01-04 19:55:52 from John Naylor <jcnaylor at gmail.com> (Patch: Yes)
    Attachment (hash2.c) at 2019-01-03 16:33:40 from Joerg Sonnenberger <joerg at bec.de> (Patch: No)
    Attachment (v5-0001-Use-offset-based-keyword-lookup.patch) at 2018-12-29 21:59:52 from John Naylor <jcnaylor at gmail.com> (Patch: Yes)
    Attachment (v4-0001-WIP-Use-offset-based-keyword-lookup.patch) at 2018-12-27 16:19:51 from John Naylor <jcnaylor at gmail.com> (Patch: Yes)
    Attachment (v3-wip-use-offset-based-scankeywords.patch) at 2018-12-23 17:51:57 from John Naylor <jcnaylor at gmail.com> (Patch: Yes)
    Attachment (v2-wip-use-offset-based-scankeywords.patch) at 2018-12-21 23:38:48 from John Naylor <jcnaylor at gmail.com> (Patch: Yes)
    Attachment (wip-01-use-offset-based-scankeywords.patch) at 2018-12-20 00:42:17 from John Naylor <jcnaylor at gmail.com> (Patch: Yes)