so that clock skew calculations work right

- NTCP inbound skew calculation had flipped sign
- Include RTT in NTCP skew calulation
- Set SSU skew on first packet so it's right from the beginning
- Above should fix the "ignoring clock offset" error
- Javadocs
RouterClock:
- Add config to disable clock adjustment for testing
- Reduce window in skew vector for slew calculation
- Double max slew rate

let the shutdown progress normally;
Make it an I2PThread instead of a Runner so we can
call fireOOM() for consistent logging (ticket #1549)
Router: Don't add OOM listener on Android so
we don't hang onto the context

 - Big method to handle status transitions, not yet used
 - Status enum tweaks, unknown must be higher code than known

 - More transition to status enum
 - Don't set TCP keepalive for IPv6

fill in subclass methods for efficient exporting,
fill in getBase64Entires() and getNames() where unimplemented
SusiDNS: Add export support, no UI yet

greatly improves "loopback" performance
minor cleanups

- Add hostname verification using code from
Apache HttpClient 4.4.1 (Apache 2.0 license)
and one small class from HttpCore 4.4.1,
slightly modified to remove additional Apache dependencies
and unneeded code.
- Includes support for public suffix list;
use basic list with standard TLDs,
and also support loading the big Mozilla list,
but don't bundle the 150KB Mozilla list for now.
- For Android, use its default verifier, which
should actually work (unlike Oracle)
- Java 7 not required, although servers requiring SNI will now
fail on Java 6, which does not support SNI
SSLEepGet:
- Rework recent setSoTimeout code changes, as they broke SNI
- Add option to save certs even if no errors
- Add option to disable hostname verification

and unneeded code, now compiles

Apache HttpClient 4.4.1 (Apache 2.0 license)
and one small class from HttpCore 4.4.1,
unmodified as a baseline for future merges.
Does not compile.
See following checkins for more info

to give better message to users and prevent JVM shutdown
on what is unlikely to be a heap issue.

moved to junit years ago but not part of any tests

if super.startRunning() failed
Register as HTTPS proxy also in HTTP client

broken in fix for ticket #815
TCG still doesn't go back to stopped, to be fixed.
Test case: configure low port.

Covers router, unsigned router, plugin, and news updates

broken in fix for ticket #815

side isn't stuck forever at a window size of 1.
Cleanups, log tweaks, javadocs

add additional checks.
Fix bug if available buffer calculation is negative
Check log level before calling displayPacket()
Log tweaks

recover quicker after packet loss;
Reduce default initial ack delay;
Rename misspelled method

orphaned ones at startup (ticket #1498)