hdf5_ep

[svn-r14978] Support for external links follow up. The format is to print the target object as part of TARGETPATH, noted with some extra indentation

The previous printing of 
LINKCLASS 64
was removed

HDF5 "textlinksrc.h5" {
GROUP "/" {
   EXTERNAL_LINK "ext_link1" {
      TARGETFILE "textlinktar.h5"
      TARGETPATH "dset"
         DATASET "dset" {
            DATATYPE  H5T_STD_I32LE
            DATASPACE  SIMPLE { ( 6 ) / ( 6 ) }
            DATA {
            (0): 1, 2, 3, 4, 5, 6
            }
         }
   }
}
}

There is no script test for this behavior so far, because test script uses complete paths that vary from test to test, making not possible to define a valid TARGETFILE in the file

tested: windows, linux, solaris