Phillip Webb e9616b7204 Backport "Prevent duplicate @Import processing" ...

Refactor ConfigurationClassParser to recursively find values from
all @Import annotations, combining them into a single unique set.

This change prevents ImportBeanDefinitionRegistrars from being
invoked twice.

Issue: SPR-9925
Backport-Commit: 6d8b37d8bb
Conflicts:
	spring-context/src/main/java/org/springframework/context/annotation/ConfigurationClassParser.java

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..

main

Backport "Prevent duplicate @Import processing"

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test

Backport "Prevent duplicate @Import processing"

2013-01-22 15:15:25 +01:00