xcodeproj cleanup
xcodeproj cleanup

Update library and header paths: use local copies in Libraries instead of ../libssh2-for-iOS
Upgrade project settings per xcode recommendations

dleehr/DLSFTPClient,brittonmobile/DLSFTPClient,brittonmobile/DLSFTPClient,dleehr/DLSFTPClient,dleehr/DLSFTPClient,brittonmobile/DLSFTPClient