qdoc: Always try to use the declaration location

qdoc now always tries to use an element's declaration location
for the "location," "filepath," and "lineno" attributes in the
index file, when it makes sense to use the declaration location.
That's pretty much everything in C++.

qdoc records both the declaration location and the definition
location in the element's tree node. When it writes the element
to the index file, it asks for the declaration location.

Change-Id: I2d169a0f028bb0d46717e6f822dacc6dd20673b2
Task-number: QTBUG-46034
Reviewed-by: Venugopal Shivashankar <venugopal.shivashankar@digia.com>
Reviewed-by: Topi Reiniö <topi.reinio@digia.com>

0 files changed, 0 insertions, 0 deletions