Heritrix: Internet Archive Web Crawler

This issue is now discussed in the new JIRA tracker at
http://webteam.archive.org/jira/browse/HER-88 -- please add further
comments at that location.

Logged In: YES
user_id=924942

Problem was multiple instances of ARCWriterPool when should
only be one. Made single static reference shared by all
arcwriterprocessors and made the setup of the pool synchronized.

Below is the commit message. Closing.

Problem was multiple instances of ARCWriterPool when should
only be one.
Made single static reference shared by all
arcwriterprocessors and made the
setup of the pool synchronized.
* src/java/org/archive/crawler/basic/ARCWriterProcessor.java
(pool): Made static private.
(initialize): Moved bulk to new synchronized _initialize
method. This
method just checks the "is initialized" flag and if not,
then we go into the synchronized block whose only
purpose is setup of
the pool.
* src/java/org/archive/crawler/fetcher/FetchHTTP.java
Removed curi.setHttpRecorder(null) at head of the
innerProcess method.
The clearing of last httprecorder is being done at tail
of the processing
chain so this call is unnecessary (If the tail clearing
of httprecord is
not working, then there's a problem).
* src/java/org/archive/io/arc/ARCWriterPool.java
Added logging of initial pool configuration.