Handle large errors in marker placement.
Closes #1485.
Add a fix for compiling mapnik against boost 1.53.0.

Qualify the call to phoenix::construct so that the compiler on RHEL6
(gcc (GCC) 4.4.6 20120305 (Red Hat 4.4.6-4)) doesn't complain. The
compiler complains that "boost::phoenix::tag::construct" is not a function.
Merge pull request #1787 from dancasimiro/fix-compile

Add a fix for compiling mapnik against boost 1.53.0.
- keep seeking for valid geometries in oracle featureset (much like postgis featureset)
+ cache fonts in memory
+ add benchmark for loading font faces.
+ better message
python tests: print exception if nose is unavailable
add test using invalid png which leaks fd when it throws - refs #1783
- improved spatialite wkb format guess
Merge branch 'master' of github.com:mapnik/mapnik
- move occi object creation in the environment
- better usage of mapnik::singleton instance in occi datasource
- occi small cosmetics
+ fix reading a region from JPEG file
+ re-use jpeg lib structures
+ avoid resource leaking (store FILE in boost::shared_ptr with custom deleter)
Merge remote-tracking branch 'origin/master'
+ fix region reading, so png's can be used in raster.input
- added testcase for wkb format parser (still to be extended). complement of 4d85cd2c4300f5f79dd9bac2791aa5f8f05432e7
Merge branch 'master' of github.com:mapnik/mapnik
+ mapnik c++ naming style
+ make image_reader non-copyable