Compiled code is compatible with windows

[xiangxn]

Compiled code is compatible with windows Visual Studio 2013:
witness.cpp[409]:
old:void witness_plugin::on_applied_block( const chain::signed_block& b )
new:void witness_plugin::on_applied_block(const steemit::chain::signed_block& b)

market_history_plugin.cpp[24]:
old:flat_set<uint32_t> _tracked_buckets = { 15, 60, 300, 3600, 86400 };
new:flat_set<uint32_t> _tracked_buckets = flat_set<uint32_t>{ 15, 60, 300, 3600, 86400 };

authority.cpp[82]:
old:
for( auto item : account_auths ) FC_ASSERT( is_valid_account_name( item.first ) );
new:
for (auto item : account_auths){ FC_ASSERT(is_valid_account_name(item.first)); }

database.cpp[2013]:
old:if( shares == 0 ) return;
new:if (shares == fc::uint128(0)) return;
The above modification in vs2013 compile "steemd.exe"

[abitmore]

Thanks. Better submit a pull request.

[theoreticalbts]

Duplicate of #288 -- these issues were reported by @btscube in prehistoric times, and have been merged to develop for a while.

[xiangxn]

merged?
The combined not in master?

[xiangxn]

There is also a small bug: division by zero