This reapplies a change from 7988a5cd,
which was accidently reverted in 4a8c4c5a.

BSLightingShaderProperty: remove unknown parameters from API (need to add these back with actual names from nifxml); warn about unknown API.

BSLightingShaderProperty: Unknown Float Set 5 -> Sparkle Parameters (see nifxml commit eb44a85334c1e3f89522de62f8fd14549f74c47d).

BSLightingShaderProperty: Environment Map Strength -> Environment Map Scale (see nifxml commit eb44a85334c1e3f89522de62f8fd14549f74c47d).

BSLightingShaderProperty: Unknown Int 7 -> Texture Clamp Mode (see nifxml commit eb44a85334c1e3f89522de62f8fd14549f74c47d).

Emissive Saturation -> Emissive Multiple (see nifxml commit eb44a85334c1e3f89522de62f8fd14549f74c47d).

Todo: refactor removed code into a dedicated function which copies unknowns from another block?

fixed niflib to exporter geometry data with binormals and tangets in it but broke niflib a bit. WARNING! from now on niflib will cause bugs when regenerated because of this

made changes to the complexshape to support dismember partitions. still need to add support for merging with dismember partitions

started adding support for BSDismemberSkinInstance.h in the complex shape. so far nothing is functional but at first glance it seems pretty straightforward enough

added support for skyrim and added some new ways to check the user version of a nif file to check if it's a skyrim file.

updated the BSLightingShaderProperty.cpp and BSLightingShaderProperty.h to add support for editing those objects

added a new overload for the AddInterpolatorMethod in the NiControllerSequence class to fix a bug when it would export the string pallete for fallout 3 nif versions.

Added support for adding new control points and editing the offsets in the NiBSplineTransformInterpolator for the start of the control points. Also made niflib compile with the latest version of qhull.

Added method to remove match data from NiTriShapeData (contributed by gentle_sal, see issue #3411674).