Types: new type 'list_append'
Rename pgmapcss.mapnik to a general pgmapcss.renderer interface
Tagchecker: initial version of tagchecker.mapcss + documentation
Merge branch 'branch-0.9' into tagchecker
Compile Check: move final checks to separate function build_result()
Property config 'return_after_statement'
TagChecker: use return_after_statement for throwError, throwWarning, throwOther
Compile Statement: Bugfixes / code improvement
Build Result / Process Renderer: Bugfixes
CHANGELOG: document tagchecker
Merge branch 'branch-0.9' into tagchecker

Conflicts:
	CHANGELOG.creole