memory/patcher: check for <sys/syscall.h> #1653
                
     Merged
            
            
          
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Thanks to @PHHargrove for reporting in http://www.open-mpi.org/community/lists/devel/2016/05/18935.php.
Signed-off-by: Jeff Squyres [email protected]
@hjelmn Please review: is this sufficient? It looks like this component should build even if
<sys/syscall.h>is not present, so I just added it toAC_CHECK_HEADERS.