first stab at moving mutable render request properties out of apply_to_layer
sync with master
Merge branch 'master' of github.com:mapnik/mapnik into map-request
+ initialize x,y for close_path commands
Add missing class declaration for python bindings.
Add parse_image_filters function to avoid python bindings access the internal structs.
Export the to_wkt functions to avoid python bindings access the internal structs.
Let template parameter type same as declaration in hpp file.
Fixed the enumeration link error with msvc when build python bindings.
Add IMPLEMENT_ENUM of enum gradient_unit_e.
Only explictly defining the enumeration template class for msvc.
expose nonconst access to datasource parameters
ensure python bindings return const params
Merge pull request #1727 from avlee/pythonbindings

Build python bindings with msvc
Merge branch 'master' of github.com:mapnik/mapnik
return stylename,styleo obj in tuple from map.styles - closes #1725 - amends 16ce1f5bdde156ef
im/view.is_solid method in python bindings to match node-mapnik - closes #1728
Merge branch 'master' of github.com:mapnik/mapnik into map-request
update changelog
scons: only link in libraries that are required by the build