Revision 490899

MFH: r490897

databases/mysql57-{client, server}: Update to latest release 5.7.25
This update (released on Jan 21st) includes:
Deprecation:
  -Tools resolveip and resolve_stack_dump utilities are now deprecated.
    (Will be removed on MySQL8.0).
Bugfix:
  -Fix a memory leak caused by a dangling pointer. (Bug #28693568)
  -Fix mishandling of SIGHUP by server could result in a server exit.
    (Bug #27966483, Bug #90742).
  -Correct potential incorrect out-of-memory checks performed by parser.
    (Bug #25633994).

More info from upstream:
  https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-25.html

PR:		234983
Reported by:	 Markus Kohlmeyer < rootservice@gmail.com >
Sponsored by:	The FreeBSD Foundation

Approved by:	ports-secteam (feld, CVE-patch blanket)