Add additional sphere effects for the initial RFC release and make params tweenable for the fun of it

Will wait for a response from @graham_linden regarding moving the sRGB conversion functions in llmath.h to llrender.

Make sure lights are in the correct color space.
Bonus: cache the sRGB color in setLightColor on point and spot lights.  Frees up a pow and some multiplies on the CPU every frame.

Cleaning up miscellaneous differences between the pathfinding repository and the latest viewer-development.

WIP: navmesh station posts to a url, responder receives llsd and then has the llpathing library extract and render the navmesh (if desired).

Result of svn merge -r107256:107258 svn+ssh://svn/svn/user/phoenix/license_2009_merge into trunk. QAR-1165

HAVOK4 IN TEH HOUSE!!11!!ONE!!
If it is broken blame Joel for not fixing the loginassetdatabaseinventorygroupIM server instead of working on this.

QAR-448

windlight14 which have passed QA (up through r79932).

svn merge -r 80831:80833 svn+ssh://svn.lindenlab.com/svn/linden/branches/merge_windlight14_r80620

Result of svn merge -r71162:71205 svn+ssh://svn/svn/linden/branches/new-license into release. only changes files which are not deployed or the comments section of code.