Don't rely on getSystemResourceAsStream to retrieve tld_lib.yml

[MtFootFrontier]

Let the ClassLoader which has loaded ourself load the YAML resource instead.
This is vital for environments such as application containers, Android, etc. where non-default ClassLoader should be used.

[coveralls]

Coverage remained the same when pulling 8657667 on uv-beluga:adaptive_classloader into 351b837 on twitter:master.

[jakl]

Thanks!

[ralph-tice]

This call is relatively expensive in my profiling, would it be crazy to cache the getClassLoader result for future instantiations of this class?

[MtFootFrontier]

It is static field so initialization will happen only once:
caching the result of getClassLoader() here makes no sence IMO.

[ralph-tice]

Sorry, I thought private would possibly scope the variable to the class instance specifically & I was looking at a different invocation of getClassLoader than the one from twitter-text. Thanks for your time!