From Colin McDonald, "Attached are some fixes to build osg using the Solaris Studio compiler.
I've also checked the modified files still build ok with other
compilers (Linux gcc, Windows Visual Studio).

osgDB/OutputStream.cpp and osgPlugins/lws/SceneLoader.cpp require
stdlib.h for atoi use.

In osg/Uniform.cpp the compiler complains that base_class is unknown
unless I add a class name qualifier.

Not a build fix, but I spotted a typo in osgUtil/SceneView."