Import range for org.apache.commons.logging is too restrictive in spring 4.1.x bundles

Current spring 4.1.x bundles have an import range of

org.apache.commons.logging;version="[1.1.3,2)"

This is a request with a patch to move lower boundary to 1.1.1

org.apache.commons.logging;version="[1.1.1,2)"

Major reason is to allow use of slf4j, where slf4j-jcl exports commons logging packages with 1.1.1 version.

Also minor cleanup in the poms to allow build from root level.