SH-2243 work in progress -- don't use built-in GL light state when shaders are available.

indra/llrender/llrender.cpp

indra/llrender/llrender.h

...w/app_settings/shaders/class1/deferred/alphaSkinnedV.glsl

.../newview/app_settings/shaders/class1/deferred/alphaV.glsl

...ew/app_settings/shaders/class1/deferred/avatarAlphaV.glsl

.../app_settings/shaders/class1/lighting/lightSpecularV.glsl

.../newview/app_settings/shaders/class1/lighting/lightV.glsl

..._settings/shaders/class1/lighting/sumLightsSpecularV.glsl

...view/app_settings/shaders/class1/lighting/sumLightsV.glsl

...ttings/shaders/class1/windlight/atmosphericsHelpersV.glsl

...w/app_settings/shaders/class2/deferred/alphaSkinnedV.glsl

.../newview/app_settings/shaders/class2/deferred/alphaV.glsl

...ew/app_settings/shaders/class2/deferred/avatarAlphaV.glsl

..._settings/shaders/class2/lighting/sumLightsSpecularV.glsl

...view/app_settings/shaders/class2/lighting/sumLightsV.glsl

..._settings/shaders/class3/lighting/sumLightsSpecularV.glsl

...view/app_settings/shaders/class3/lighting/sumLightsV.glsl

indra/newview/llviewerdisplay.cpp

indra/newview/llviewerwindow.cpp

indra/newview/pipeline.cpp