Reupload some maps to fix weird graphics glitches

[GoogleFrog]

esources = {
    specularTex = "specular.tga",
    splatDistrTex = "dist.tga",
    splatDetailTex = "nil",
    splatDetailNormalDiffuseAlpha = 1,
    splatDetailNormalTex1 = "metal.tga"; --sand texture
    splatDetailNormalTex2 = "stone.tga"; --bones
    splatDetailNormalTex3 = "underwater-rock.tga"; --bones
    splatDetailNormalTex4 = "underwater-rock.tga"; --sand/bone border
    },

Todo: link to the maps