* Replacing Namespace:: functions with NS_ constants
* Replacing make*Link() on strings with make*LinkObj() on Title objects
* Using more legible convenience methods on User and Title
* Start using a common Linker::commentBlock() to wrap the formatComment() bits in the surrounding formatting
module and moved user talk modification code to User (it's read in
User, should probably be written in User, too). Changed calling code
in Article to update the user directly, rather than using the
UserTalkUpdate class. Tested with logged-in and not-logged-in users.
* DB_WRITE now called DB_MASTER, DB_READ now called DB_SLAVE
* Converted to use SQL wrapper functions instead of direct SQL in various places
* Experimental method for preserving the chronological order of events when slave servers are used. Untested.
* Fixes to the new post-parse existence test feature
* Some.. other stuff
