The commands used were:
svn merge -r15024:15025 svn+ssh://bugman@.../svn/relax/branches/frame_order_testing .
svn merge -r15025:15026 svn+ssh://bugman@.../svn/relax/branches/frame_order_testing .
svn merge -r15026:15027 svn+ssh://bugman@.../svn/relax/branches/frame_order_testing .
svn merge -r15027:15028 svn+ssh://bugman@.../svn/relax/branches/frame_order_testing .
svn merge -r15028:15029 svn+ssh://bugman@.../svn/relax/branches/frame_order_testing .
svn merge -r15029:15030 svn+ssh://bugman@.../svn/relax/branches/frame_order_testing .
Again much conflict resolution was required.