[#2259] RenderMapping has no effect, if not supplied to the Executor
constructor

Conflicts:
	jOOQ/src/main/java/org/jooq/SchemaMapping.java
	jOOQ/src/main/java/org/jooq/impl/DefaultConfiguration.java
Fixed some warnings
[#2262] RenderSchema has no effect, if not supplied to the Executor
constructor

Conflicts:
	jOOQ/src/test/java/org/jooq/test/SettingsTest.java