Revision 1860377

Merge r1857391 from trunk:

 * r1857391
   Fix build with APR 1.7.0.
   Justification:
     Bogus configure script check relies on APR internals.
     See https://svn.haxx.se/users/archive-2019-04/0041.shtml
     and https://svn.haxx.se/dev/archive-2019-04/0020.shtml
   Votes:
     +1: stsp, rhuijben (bindings change so 2+1's is enough)