Squashed 'server/skynet/' changes from 0279144..56fdbef

56fdbef remove snax global set limit
fbf3953 Merge pull request #94 from xjdrew/master
c081816 1. 可以在服务运行中动态require socket 2. 添加方法skynet.retpack/skynet.dispatch_unknown_request 3. skynet.filter透传参数
d0dc729 mongo client : copy table
72d565d remove redis config file, use table directly
5db65a6 Merge pull request #93 from van9ogh/master
ebe2283 Update .gitmodules
c577a4f quickfix: ssize_t
37233e7 Merge pull request #91 from cloudwu/jemalloc
2376454 rewrite get_allocated_field
2680425 handle is uint32_t
25c8f1e bugfix: SLOT_SIZE should be 64K
d21ff9d add memory lua lib
7d835d2 use macro for replace malloc api (see skynet_malloc.h)
23cfb11 bugifx: clean prefix
b6b639b check 3rd/jemalloc/autogen.sh
237c232 add git submoudle update to makefile
ae0ceed detect JEMALLOC_OVERRIDE_MEMALIGN
072b603 bugfix: use memcpy for unalign memory
ac1a0a4 malloc hook for jemalloc and c memory info dump
5b68dc6 add submodules jemalloc
d0fe189 Merge pull request #90 from cloudwu/simplify
cfbd68b check callback return value for reserve the message
d568e54 delete unused feature : group/localcast/forward, etc
2fc7ced fix typo
e9277dd Merge pull request #88 from wsk3201/fixnetpack
1aca253 Merge pull request #89 from cloudwu/snax
6c6f9d6 no return value for exit()
129b1cd queue mode
6d4d9f8 use a patch to hotfix
58dfe38 hotfix snax supported
df5c619 snax : a simple skynet auxliliary framework
2308ce3 fixnetpack
a420fe4 Merge pull request #87 from cloudwu/priority
7b2be20 simplify send_buffer
6adf543 Add low priority list to socket send buffer

git-subtree-dir: server/skynet
git-subtree-split: 56fdbef85167afa48f7cd45e0ceedafc1643e1d7
Merge commit 'd31a0321932b48cad4817733908d2c7d9c789c7a'