Fix typos in render_list man page
Merge pull request #14 from pnorman/patch-1

Fix typos in render_list man page
Added simple 'null' storage, which might be useful for benchmarking or testing.
Merge pull request #19 from zerebubuth/master

Add 'null' storage
Set same default renderd socket, fixes #18
add git ignores
Added missing null storage source file for APXS build.
Merge pull request #22 from zerebubuth/master

Fix null storage missing symbol
Change absolute URL in slippymap.html to a relative one

If we're browsing from a different machine localhost is the wrong hostname.
Merge pull request #23 from pnorman/patch-1

Change absolute URL in slippymap.html to a relative one
Merge pull request #20 from ramunasd/master

fix issue #18, ignore compilation files
Don't ignore all .m4 files, only autogenerated ones
Daemon: fix typo in #define
gen_tile: Instead of two DONE messages write START and DONE messages
Add time of old metatile to item structure, print age when starting rendering

- struct item got value 'old_mtime', holding the time of the old metatile (or 0
  for new tiles)
Merge pull request #24 from plepe/bugfix

Daemon: fix typo in #define
Merge pull request #26 from plepe/log-start-tile

Log start tile
Partially revert previous commit for logging and fix it.

The previous patch did not take different storage backends into account,
or different tile path locations.
[Bug fix] mod_tile was not correctly thread-safe in Apache 2.2 and could segfault.

Apache's memory pool operations aren't thread-safe. In get_storage_backend
multiple threads could try to allocate memory on the process pool concurrently
leading to segfaults. To prevent this, wrap that code into a mutex.

Benchmarking seems to indicate, that even though each request has to acquire the lock
this does not appear to have a performance impact.

The issue was reported by Sven Geggus, and diagnosed by Tom Hughes. Thanks.
Only set buffer_size if it hasn't already been set via the style-sheet

It assumes that one doesn't set an explicity buffer_size of 0 and thus
all buffer_sizes are the default for which renderd then overwrites it to
buffer_size 128.

Addresses issue #17