CDI extensions are not loaded if they are declared in a source folder.

CDI extensions are loaded only if they are declared in jar files. We should load them from source folders too.

EXECUTE: Create two CDI projects: Project A and B. Project A should be included in the class path of project B.
EXECUTE: Create a file A/<sourceFolder>/META-INF/services/javax.enterprise.inject.spi.Extension
EXECUTE: Add the following text to the service file:

org.jboss.seam.servlet.ServletExtension

EXECUTE: Create any bean in project B and add the following injection point to the bean:

@Inject @RequestParam("id")
private String bookId;

ASSERT: bookId is not marked as unsatisfied dependency. <- Failure
EXECUTE: Remove A/<sourceFolder>/META-INF/services/javax.enterprise.inject.spi.Extension
EXECUTE: Build the projects.
ASSERT: bookId is marked as unsatisfied dependency.