Use Stack in the munin graph of queue_time
Fix sending back NotDone from renderd immediately if
 request doesn't fit into a rendering queue

RenderPrio, Render and RenderLow queues each only have a size of 32 entries. If these are full,
then requests overflow into the dirty queue. If this happens, renderd should send the NotDone
back immediately so that mod_tile doesn't wait for potentially a long time.

This however only worked for Render requests, but not RenderPrio or RenderLow. This patch fixes this.
Set min value of 0 for munin graph render time spent by
Correct axis label for renderd_queue_time munin graph
Correct derivation expression for renderd_zoom_time munin graph
Merge pull request #45 from tomhughes/munin

Fix munin plugin bugs
add capability to export specific bbox or zoom
Merge pull request #47 from woodpeck/master

add capability to export specific bbox or zoom
Don't try to install mod_tile.so using debian/libapache2-mod-tile.install

This was not working anymore since 273973e which moved the sources to a src/
directory in order to clean up the top level directory, which broke the package
build. However, debian/rules already contains calls to 'make' which install
mod_tile.so to the correct location, so it's not even necessary to install it
using debian/libapache2-mod-tile.install.
Merge pull request #48 from mstock/fixes

Don't try to install mod_tile.so using debian/libapache2-mod-tile.install
Update mod_tile to renderd protocol to version 3.

Include an "options" string and a "mimetype" string.
Support options for tile layers in mod_tile.

If a tile layer has options enabled, the URL changes to

http://localhost/style/options/z/x/y.ext
Extend the storage backends to support options
Enable mapnik style parameterization

Provide a parameterization function for internationalizing the names
Fix compile on older mapnik version. This should fix #49
Improve backwards and forward compatibility for renderd protocol v3/v2
Fix some issues in the test framework found via coverity scan
Fix issues found via coverity scan
Fix issues found via coverity scan
Fix issues found via coverity scan