Fix a bug in UTF-8 parsing caused by signed chars.

refs #1353
Rename the log "user bytes" statistic to "payload bytes".  The former has confused a few people, I hope the new wording is clearer.
Add upgrading notes.
Add Python NVD3 build 0.11.0 to our source tree.

This saves requiring a particualr version being installed on a
users computer.
Merge pull request #1364 from wiredtiger/nvd3-in-library2

Add Python NVD3 build 0.11.0 to our source tree.
Fix LSM trees with custom collators: use the same customize path as for btrees.

refs #1361
Fix whitespace in wtstats.py.
Fix custom collators with LSM (and other non-btree sources): don't assume there is a data handle in the session.
Merge pull request #1366 from wiredtiger/collator-config

Fix LSM trees with custom collators: use the same customize path as for btrees
Add the additional arguments for the custom collator support.
Fix a typo, change directory before checking out a branch.
Add tools/3rdparty to the list of directories we skip when checking
copyright notices.
Add minor additional wording as part of adding NVD3 to the tree.
Fix duplicate section labels, fix renamed name.
Merge pull request #1362 from wiredtiger/log-bytes-payload

Rename the log "user bytes" statistic to "payload bytes"
Typo.
I moved the getopt.c sources from src/utilities/util_getopt.c to
src/os_posix/getopt.c, update the license information.
Fix __wt_open to handle new WT_FILE_TYPE_DIRECTORY
Merge pull request #1369 from markbenvenuto/win_open_fix

Fix __wt_open to handle new WT_FILE_TYPE_DIRECTORY
Rename tools/third_party to tools/3rdparty

Also remove pre-compiled Python. I thought it was necessary,
but it isn't.