Adds comments to the DefaultRTCPReportBuilderImpl

git-svn-id: http://svn.code.sf.net/p/fmj/code/fmj@62 799b4810-d841-4bb4-a54b-9156a0c3e4cd
Changes fields visibility for access by the BasicRTCPTerminationStrategy in libjitsi

git-svn-id: http://svn.code.sf.net/p/fmj/code/fmj@63 799b4810-d841-4bb4-a54b-9156a0c3e4cd
Changes fields visibility.

git-svn-id: http://svn.code.sf.net/p/fmj/code/fmj@64 799b4810-d841-4bb4-a54b-9156a0c3e4cd