Quote schema and table name in TPGConnection.FetchDbObjects. Fixes empty tables list. See http://www.heidisql.com/forum.php?t=16429

git-svn-id: http://heidisql.googlecode.com/svn/trunk@4821 560a3889-bb33-0410-9f33-43a8a102dc09
Switch character set from utf8 to the fixed one called utf8mb4 in MySQL. Attempt to still use utf8 when that newer charset does not exist in the client library. At the same time, update libmysql to v2.0 from https://downloads.mariadb.org/client-native/2.0.0/ . See http://www.heidisql.com/forum.php?t=16425

git-svn-id: http://heidisql.googlecode.com/svn/trunk@4822 560a3889-bb33-0410-9f33-43a8a102dc09