`svn merge -c1799289 ^/tiles/request/branches/TREQ_1_0_X`

TREQ-21: Convert IOException to FileNotFoundException on local protocols
- Separate between local and remote URL protocols, check on construction time whether the URL points to a local resource
- Always throw a FileNotFoundException when the URL points to a local resource and url.openConnection throws an IOException
- Added system property 'tiles.remoteProtocols' which can be used to specify additional remote protocols
- Added OSGi tests including PAX-EXAM dependencies

references:
 - pull request: https://github.com/apache/tiles-request/pull/2
 - ticket: https://issues.apache.org/jira/browse/TREQ-21

Contributed by Roland Hauser ( https://github.com/SourcePond )

This closes #2


git-svn-id: https://svn.apache.org/repos/asf/tiles/request/trunk@1799291 13f79535-47bb-0310-9956-ffa450edef68