Ruby » Ruby master

thread_pthread.c: precise stack size

• thread_pthread.c (ruby_init_stack): round stack limit to page size
  boundary to calculate stack size more precisely. [ruby-dev:46174]
  [Bug #7084]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37080 b2dd03c8-39d4-4d8f-98ff-823fe69b080e