Changes since version 1.9.6 :

Willy Tarreau (5):
      BUILD: makefile: work around an old bug in GNU make-3.80
      BUILD: http: properly mark some struct as extern
      BUILD: chunk: properly declare pool_head_trash as extern
      BUILD: cache: avoid a build warning with some compilers/linkers
      MINOR: tools: make memvprintf() never pass a NULL target to vsnprintf()