Upgrade to tiles 3 jcl-over-slf4j

[Greg Huber]

Should jcl-over-slf4j be in the tiles-core pom?

It seems to be an option for migrating from Jakarta Commons Logging which
some might not want to do.

<dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>jcl-over-slf4j</artifactId>
</dependency>


​http://www.slf4j.org/legacy.html​

​To ease migration to SLF4J from JCL​

​#####​

​I use ​Jakarta Commons Logging.


slf4j-jcl is used to delegate all SLF4J logging to Commons Logging.

​<dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-jcl</artifactId>
</dependency>​


​and then log4j-jcl to delegate all to Commons Logging to log4j 2

<dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-jcl</artifactId>
            <version>2.5</version>
</dependency>​



Cheers Greg.