[buildd] giveback hypre 2.16.0 on hurd m68k sh4

[Drew Parsons]

hypre occasionally times out during tests, causing FTBFS. Typically it 
will pass if tried again. Please give back hypre 2.16.0-2 to attempt 
builds again on hurd-i386  m68k sh4.

gb hypre_2.16.0-2 . hurd-i386  m68k sh4

Thanks,
Drew