If --srcdir and --windows is given, check if error message file
  is in source or build tree (bug#24557)
Makefile.am:
  Cleaned up "ali_check" target, to satisfy "distcleancheck" (bug#24557)
mysql_install_db.sh:
  Added --srcdir=DIR option, used from top Makefile.am in dist-hook
  target, to find "fill_help_tables.sql" in VPATH build (bug#24557)
Makefile.am:
  Work around problem with "distcleancheck", "sql_yacc.cc" might be in both
  the source and build tree.
  Call "mysql_install_db" with new option --srcdir, to enable the script
  to find all that is needed, if source and build directory is not the same
  (bug#24557)