Fix OpenMP flag detection for various Fortran compilers.

[pspp] / ChangeLog

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+2011-02-28  Christian Rössel  <christian.roessel@gmx.de>  (tiny change)
+           Markus Geimer  <m.geimer@fz-juelich.de>  (tiny change)
+
+       Fix OpenMP flag detection for various Fortran compilers.
+       * m4/openmp.m4 (_AC_LANG_OPENMP(Fortran 77)): Use '!$'
+       OpenMP-conditional compilation construct, to force compile
+       failure with missing OpenMP flag.
+       (AC_OPENMP): Add flags for Cray CCE and NEC SX compilers.
+
 2011-02-25  Eric Blake  <eblake@redhat.com>
 
        strstr: expand test coverage