Merged in graham_linden/viewer-eep-fixes (pull request #189)

indra/llrender/llglslshader.cpp

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

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

...wview/app_settings/shaders/class1/environment/waterV.glsl

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

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

...ttings/shaders/class1/windlight/atmosphericsHelpersF.glsl

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

...newview/app_settings/shaders/class1/windlight/gammaF.glsl

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

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

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

.../app_settings/shaders/class2/windlight/atmosphericsF.glsl

...ttings/shaders/class2/windlight/atmosphericsHelpersF.glsl

...ttings/shaders/class2/windlight/atmosphericsHelpersV.glsl

...newview/app_settings/shaders/class2/windlight/gammaF.glsl

...iew/app_settings/shaders/class2/windlight/transportF.glsl

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

indra/newview/llviewershadermgr.cpp