failure on torture test in autoconf 2.52

[Ken Montero]

Low level compiling/preprocessing macros.

 

 33: compile.at:14     ok
 34: compile.at:75     FAILED near `compile.at:75'
 35: compile.at:87     ok
 36: compile.at:115    ok
 37: compile.at:128    ok
 38: compile.at:139    ok
 39: compile.at:169    ok
 40: compile.at:206    ok
 41: compile.at:250    ok
 42: compile.at:277    ok (skipped near `compile.at:277')