mysys/mf_pagecache.c:
  comments fixing. More comments.
  pagecache_ulock_block->page_unlock_block
sql/mysqld.cc:
  MyISAM is always enabled so Maria needs have_maria
  which MyISAM does not need. This should fix a link failure in pushbuild
storage/Makefile.am:
  force myisam to be built before maria (will not be needed when
  Maria does not depend on MyISAM anymore)