out_forward supports dns_expire_time option [#48]
out_forward supports dns_expire_time option 2 [#48]
out_forward supports dns_expire_time option 3 [#48]
out_forward: fixed race condition of @resolved_host variable [#48]
out_forward: reverted on_heartbeat_request not to return received msg [#48]
out_forward: dns_cache_expire -> expire_dns_cache to make meaning of 0 clear
Fixed variable name
Fix test failure at in_object_space.

Depending on GC timing, mock object at test/mixin.rb are remains while
test/in_object_space.rb. But lib/fluentd/in_object_space.rb call Object#class
on all un-GCed object, including mock object.

Because unexpected method expectations are happen, in_object_space reports failure.
Fix failure when calling Object#class.

Object#class is not always success.
E.g. a dead actor of Celluloid are failed with any method call.
Merge pull request #57 from bitterb/master

fixed a variable name in TestDriver#configure
Merge pull request #58 from mzp/fix_in_object_space

Fix in_object_space
in_tail: update inode in a PositionEntry when a log file rotated
added in_debug_agent and fluent-debug command
fluent-debug: fix to recognize command-line options and show connected uri
fix listen address for configuration not to bind "localhost"
add secondary groups to the process when changing process user
Ruby prefers ? rather than if-then
out_forward: assumes getting a heartbeat after send_data
out_forward: lazier failure detection: default phi_threshold 8 -> 10
in/out_forward: include \0 in heartbeat packets