Log Message:
Updated devel/p5-Parallel-Prefork to 0.18
-----------------------------------------
0.18
        - fix the broken $pm->wait_all_children without timeout (by shogo82148)

(pkgsrc changes)
 - For make test, following lines added
  BUILD_DEPENDS+= p5-Test-SharedFork-[0-9]*:../../devel/p5-Test-SharedFork
  BUILD_DEPENDS+= p5-forks-[0-9]*:../../devel/p5-forks
  BUILD_DEPENDS+= p5-IPC-Signal-[0-9]*:../../devel/p5-IPC-Signal