gc.c: GC.stress after realloc

* gc.c (objspace_malloc_increase): run GC after realloc not only
  malloc and calloc by GC.stress.  [ruby-core:62103] [Feature #9761]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45653 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2014-04-22

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45654 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
gc.c: full mark after malloc/realloc

* gc.c (objspace_malloc_increase): run full mark if 0x04 bit is
  set in ruby_gc_stress.  [ruby-core:62103] [Feature #9761]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45655 b2dd03c8-39d4-4d8f-98ff-823fe69b080e