more compilation fixes on Mac OS X with llvm/gcc.
more compilation fixes on Mac OS X with llvm/gcc.

appleseedhq/appleseed,Vertexwahn/appleseed,gospodnetic/appleseed,gospodnetic/appleseed,est77/appleseed,glebmish/appleseed,Vertexwahn/appleseed,appleseedhq/appleseed,docwhite/appleseed,luisbarrancos/appleseed,pjessesco/appleseed,dictoon/appleseed,aiivashchenko/appleseed,glebmish/appleseed,Aakash1312/appleseed,aytekaman/appleseed,glebmish/appleseed,glebmish/appleseed,gospodnetic/appleseed,dictoon/appleseed,pjessesco/appleseed,Aakash1312/appleseed,est77/appleseed,luisbarrancos/appleseed,gospodnetic/appleseed,Biart95/appleseed,Biart95/appleseed,aiivashchenko/appleseed,docwhite/appleseed,gospodnetic/appleseed,est77/appleseed,dictoon/appleseed,Aakash1312/appleseed,luisbarrancos/appleseed,pjessesco/appleseed,aiivashchenko/appleseed,est77/appleseed,aiivashchenko/appleseed,aytekaman/appleseed,Biart95/appleseed,aytekaman/appleseed,luisbarrancos/appleseed,Vertexwahn/appleseed,aiivashchenko/appleseed,luisbarrancos/appleseed,appleseedhq/appleseed,Aakash1312/appleseed,aytekaman/appleseed,docwhite/appleseed,Biart95/appleseed,glebmish/appleseed,pjessesco/appleseed,appleseedhq/appleseed,pjessesco/appleseed,aytekaman/appleseed,est77/appleseed,dictoon/appleseed,Vertexwahn/appleseed,docwhite/appleseed,appleseedhq/appleseed,Vertexwahn/appleseed,Aakash1312/appleseed,docwhite/appleseed,Biart95/appleseed,dictoon/appleseed