Bump version number to 1.8.6
Update to svn 1.7.8.
switch to v110_xp platform toolset
update default.build.user.tmpl
build.txt: update wix version
Use CTraceToOutputDebugString() instead of the custom TRACE.
Compile with VS2012.
update ext/Versions.txt
Update to SQLite 3.7.15
use the _countof macro instead of explicitly specifying the number of elements
