symbolizer-expressions replayed against latest master
fix path
don't set -stdlib in CXXGLAGS
pass filter_type by r-value
re-use evaluator object
reduce verbosity :D
Update Cairo renderer so that it compiles.
Taking out unnecessary member variable added in 1a22a19a.
Merge pull request #2097 from MapQuest/mla-expr-v2-cairo

Cairo support in expr-v2 branch
use static_assert
make Map equality comparable (work-in-progress)
fix wkt_multi_generator typedef - previously accidentally matched mapnik::geometry_container - bug spotted by @mojodna - refs #2098
c++11 : use std::chrono
c++11 : add chrono based auto timer
use mapnik::auto_cpu_timer
expressions grammar : fix global attribute rule
format : fix copy note
c++11 : style
Updated grid renderer for `expr-v2` branch.

All the grid visual tests pass.

One small issue is that in the grid line pattern symbolizer it
constructs a 'fake' line symbolizer to re-use code (as the grid
renderer cares nothing for patterns), but doesn't pass the
offset parameter to it. The tests currently require this
behaviour, but they should probably be changed as it seems
incorrect.
Merge pull request #2099 from MapQuest/mla-expr-v2-grid

Update grid renderer for `expr-v2` branch