Doesn't set REMOTE_ADDR when IO#getpeername failed.

IO#getpeername sometimes throws an exception when user uses special
client, e.g. POST form with web browser, So we should ignore
IO#getpeername exception to continue to emit an event.
Remove unexpected file
v0.10.40
Add Travis badge
Merge pull request #214 from Paulche/master

Add Travis badge
add `max_retry_wait` parameter for BufferedOutput
Merge pull request #219 from sonots/max_retry_wait

add `max_retry_wait` parameter for BufferedOutput
Catch emit exception and disable backtrace dump. refs #220
Merge pull request #222 from fluent/fix-stacktrace-explosion

Catch emit exception and disable backtrace dump. refs #220
Add --suppress-repeated-stacktrace option
Merge pull request #223 from fluent/stacktrace-suppression

Add --suppress-repeated-stacktrace option
v0.10.41
Fix memory leak ocurring when a plugin accesses to config key repeatedly.
review for fix memory leak
Merge pull request #230 from sonots/fix_memory_leak

Fix memory leak occurring when a plugin accesses to config key repeatedly.
Add types and related parameters for type conversion
Merge pull request #229 from fluent/another-parser-typed-support

Add types and related parameters for type conversion
Add TCP support to in_syslog plugin. fix #234
Forgot to add test cases for syslog TCP
Modify TCP test case