Revert r50122 "* configure.in: ac_cv_func_vfork=no on sparc-solaris."
fork(2) is also deprecated...
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50123 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Revert r50122 "* configure.in: ac_cv_func_vfork=no on sparc-solaris."
fork(2) is also deprecated...
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50123 b2dd03c8-39d4-4d8f-98ff-823fe69b080e