Update codec2 svn checkout URL in BuildCodec2.cmake

git-svn-id: https://svn.code.sf.net/p/freetel/code/fdmdv2@1329 01035d8c-6547-0410-b346-abe4f91aad63
Update libctb static build.

git-svn-id: https://svn.code.sf.net/p/freetel/code/fdmdv2@1330 01035d8c-6547-0410-b346-abe4f91aad63
Make in-source build error message more human readable.

git-svn-id: https://svn.code.sf.net/p/freetel/code/fdmdv2@1331 01035d8c-6547-0410-b346-abe4f91aad63