fixed compilation in debug mode, plus minor code tweaks.
Merge branch 'master' of github.com:appleseedhq/appleseed
tweaked travis build: changed git tag to travis-build, enabled verbose mode for unit tests, fixed a typo.
fixed travis build: the git tag must contain a version number of the form <major>.<minor>.<patch>.
fixed and refactored the interface and implementation of foundation::XMLElement.
Get attributes work. Added getters for camera attributes.
More OSL attributes work.
Commit for curve uv computation logic
fixed a travis build error wrto access the base class variable
Merge pull request #486 from sriravic/branch_curve_03_pr

Commit for curve uv computation logic
Merge branch 'master' into OSL_updates
Updated get_texture_info call.
More OSL camera attributes work.
Small fixes.
Merge pull request #487 from est77/OSL_RendererServices

OSL renderer services improvements
Fixed integer division bug, undef macro after use, formatting.
fixed artifacts with small curves, refactored and cleaned up the code.
implemented curve presplitting.
added a comment.
Merge branch 'master' of github.com:appleseedhq/appleseed