Change Net Plugin Log Messages To Be Less Alarming

[ericpassmore]

Net_plugin has log message which use the word fork. This may cause unneeded alarm as many people associate fork with a divergence in block chain across nodes. This issue is a request to use a different noun in place of fork in net_plugin.

Example: updating chain info lib ${lib}, fork ${fork}

spring/plugins/net_plugin/net_plugin.cpp

Lines 3258 to 3284 in 29396aa

	// call only from main application thread
	void net_plugin_impl::update_chain_info() {
	controller& cc = chain_plug->chain();
	uint32_t lib_num = 0, head_num = 0;
	{
	fc::lock_guard g( chain_info_mtx );
	chain_info.lib_id = cc.last_irreversible_block_id();
	chain_info.lib_num = lib_num = block_header::num_from_id(chain_info.lib_id);
	chain_info.head_id = cc.fork_db_head_block_id();
	chain_info.head_num = head_num = block_header::num_from_id(chain_info.head_id);
	}
	fc_dlog( logger, "updating chain info lib ${lib}, fork ${fork}", ("lib", lib_num)("fork", head_num) );
	}
	// call only from main application thread
	void net_plugin_impl::update_chain_info(const block_id_type& lib) {
	controller& cc = chain_plug->chain();
	uint32_t lib_num = 0, head_num = 0;
	{
	fc::lock_guard g( chain_info_mtx );
	chain_info.lib_num = lib_num = block_header::num_from_id(lib);
	chain_info.lib_id = lib;
	chain_info.head_id = cc.fork_db_head_block_id();
	chain_info.head_num = head_num = block_header::num_from_id(chain_info.head_id);
	}
	fc_dlog( logger, "updating chain info lib ${lib}, fork ${fork}", ("lib", lib_num)("fork", head_num) );
	}