More logging cleanup

by tracking version of each list, and catching some exceptions

More cleanups
SingleFileNamingService: Store signature properties on write

Remove duplicate lookups in SOCKS 5
Log tweaks
Streaming, i2ptunnel: Catch null destination in connect() calls
Synchronize Connection.setRemotePeer(); remove _remotePeerSet field

Prep for dependency on libtomcat7
Doesn't work yet, breaks susidns.
glassfish-javaee for jstl.jar and standard.jar version 1.2 won't work with tomcat7,
it's ancient and not compatible with recent el libs.
Add back option to depend on libjakarta-taglibs-standard and libjstl1.1-java which are version 1.1.2,
but not clear if they will work with tomcat7 either, even though they are
dependencies of libjetty8-extra-java.
We switched from JSTL 1.1.2 to JSTL 1.2 when we went from Jetty 5 to Jetty 6 in 2012.
1.2 libs are not available anywhere except for Glassfish, and
Debian only has the ancient Java EE 5 Glassfish 2.1.
Not clear there's any way to get susidns (and bote) to work with both Tomcat 6 and 7.
- Fix wrong jsp-api version
- Fix other minor errors in install and links files.
- Log stack trace for Jetty warnings if log level is WARN
- SusiDNS: Move standard.jar and jstl.jar out of WEB-INF/lib, where Tomcat 7 build refuses to find them

Reduce expiration for router infos with introducers
More negative cache checks
Log tweaks
SSU: Switch introducers less often

 - Fix hostname signature not finding private key file
 - Hide hostname signature if not successful
 - Null check for hostname signature failure
 - Make add-to-addressbook link a button
 - Add QR code generation

created by me, public domain

as it isn't reliable
cleanup and log tweaks

Change from 60s DHS to 60m DBF
Use reply key as filter key, not first part of
encrypted data, to match the specs and hopefully reduce dups
BuildMessageProcessor cleanups
log and stat tweaks
remove deprecated methods
remove some timing measurements
javadocs

support sig types or encrypted replies (ticket #1742)

outbound queue at once, for efficiency.
This allows more aggressive combining of fragments in packets,
and ensures the priority queue works as designed.
Don't sort outbound messages by size, keep priority order instead.
Log tweaks

when explict host is set. Validate addresses before confirming that
we have an IPv6 address. Possibly related to ticket #1538.
javadocs

Profiles:
  - Fix first heard about to be earliest, undeprecate
  - Fixup first heard about at profile readin
  - Persist good/bad lookup/store DBHistory stats added in 0.7.8
  - Remove unused DBHistory methods and fields to save memory
  - Change bonus longs to ints to save memory
  - Extend profile expiration time from 3 days to 15
  - Consolidate getLong()
  - Synch fixes
Sybil tool: Tweaks and enhancements