PROBLEM: (81716, 82289, 82094, 80719,
          84368) (PATCH ID: OSF510-074)
********
  This patch fixes several problems in the /sbin/loader and /usr/ucb/ldd. 
  The first fix is with rpaths on shared libraries.   Previously the loader
  would only recognize the rpaths that were defined in the main executable.
  The loader now additionally recognizes rpaths defined in the shared libraries.
  The previous rpath behavior can be obtained by setting the 
  -use_main_rpath_only _RLD_ARGS loader environment variable.
  
  The second fix concerns loading libraries linked with the -taso flag.
  The loader will now correctly fail to load a library in -taso mode if
  any of the library's address space is mapped above the 31-bit taso address
  range.

  The third fix is for incorrectly specified _RLD_ARGS.  The loader now
  detects incorrect _RLD_ARGS and issues an error.

  The last fix is for the handling of the RHF_BIND_NOW bit in the object
  file.  The loader now performs immediate symbol binding when that bit is
  set.   Previously, the loader would ignore the RHF_BIND_NOW bit.