c2f24f5 Fix gnulib intprops problem

Authored and Committed by berrange 4 years ago
    Fix gnulib intprops problem
    
    Taken from gnulib commit
    
      commit b9c364f02cb7a7485cd063fa2cbcbf82042fa8cc
      Author: Jim Meyering <meyering@fb.com>
      Date:   Mon Aug 29 09:27:50 2016 -0700
    
        intprops.h: fix missing-backslash problems
    
        * lib/intprops.h (_GL_ADD_OVERFLOW): Add backslash.
        (_GL_SUBTRACT_OVERFLOW,_GL_MULTIPLY_OVERFLOW): Likewise.
    
    Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>