Name of java-support and spring-extensions JARs

[Tom Zeller]

>From the perspective of someone looking at the dependencies of a web
app, it may not be clear where to find the source for java-support and
spring-extensions. If the names were shibboleth-support and
shibboleth-spring-extensions, I think it would be more clear. I think
someone might think that spring-extensions-1.0.0.jar was part of
Spring, instead of Shibboleth, based on their artifact naming
convention.

Just something I noticed.