* test/ruby/envutil.rb (assert_no_memory_leak): On Solaris 9 or later,
  if possible, execute child ruby with environment variables
  LD_PRELOAD=libumem.so UMEM_OPTIONS="backend=mmap". With these
  variables, freed memory is immediately returned to the OS.
  [Bug #10020] [ruby-dev:48391]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46791 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2014-07-12

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46792 b2dd03c8-39d4-4d8f-98ff-823fe69b080e