[svn-r27572] Removed VMS-specific code from the library.

The only remaining code consists of a few floating-point tests
that rely on pre-generated and checked-in VMS files. These have
been left alone, even though they will not be possible to
recreate, since testing VMS float behavior is still important.

Tested on: h5committest

tools/lib/h5diff_array.c

@@ -6090,28 +6090,6 @@ my_isnan(dtype_t type, void *val)
         }
     }
 
-#ifdef H5_VMS
-    /* For "float" and "double" on OpenVMS/Alpha, NaN is
-    * actually a valid value of maximal value.*/
-    if(!retval)
-    {
-        if (FLT_FLOAT==type)
-        {
-            float x;
-
-            HDmemcpy(&x, val, sizeof(float));
-            retval = (x==FLT_MAX || x==-FLT_MAX);
-        } else if (FLT_DOUBLE==type) {
-            double x;
-
-            HDmemcpy(&x, val, sizeof(double));
-            retval = (x==DBL_MAX || x==-DBL_MAX);
-        } else
-        {
-            return FALSE;
-        }
-    }
-#endif /*H5_VMS*/
     h5difftrace("my_isnan finish\n");
 
     return retval;