monsters::upgrade_type(), as it's more accurate, allow it to adjust HD as well as HP, and do the latter when promoting to a priest, to make sure that it ends up with the proper HD.
git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@3860 c06c8d41-db1a-0410-9941-cceddc491573
VGVUWNUF4CV4PGWZFHHT5SOC2BQAED5DOY47I4HCJUV2OQW46RDAC V7IKAPO5OY7CJTT62GMHQOD3EQW42FTTY3KDBOTJUODPS5WMBCHAC K2CS6TCX2NDVL2ASEHGP4J4K4IJ6FP3ANNKTSIWVG43HPYSBX6ZQC RIIO4BI64ECFXSRLBP3RA24QOPYXJVWMSFHLNTKUZS5YCLISLVJQC 5UC5TI7B6NWGIGN74QRBZKDBYUMHLM2ZO5ATXEZ6TZOGOLF3JX5QC QDTVLBRGHDTRUVT7I3O72K6TMOYAUSAJBZUHGOEFU2RKJNUPWZSQC CDKRLJIGVWQE2PMHCSLJBLYQEK7JYC4LQM7H2X3O6NMJMCCDRVIAC 7AMQN7MITMXBNVDAK5VOXTQ4TZIAOD6ZLOFJG7GQMBTY23Y2BKSAC