Log Message:
Update to 3.3.6.

Changes in 3.3.6
2012-11-15 -- that's Post-GIS day !

- Bug fixes / improvements
    - Add support for testing with phpunit 3.6 (not loosing support for 3.4)
    - Segfault from intersection (#586, #598, #599)

Changes in 3.3.5
2012-06-25

- Bug fixes / improvements
    - Correctly increment CAPI lib version from 3.3.3 (#558)
    - Port robustness fix to CentroidArea (#559)
    - Always return POINT from GEOSGetCentroid, even for EMPTY (#560)
    - Always return POINT from GEOSPointOnSurface, even for EMPTY (#561)