movec lua_util.h to lua_util.hpp

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branch : physicsfs
made some minor changes

--HG--
branch : physicsfs
fixed file modes
Moved remaining messages out of plain source
Removed -DSTANDALONE option
Did some documentation.
moved lua util

--HG--
branch : physicsfs
rename : src/util/lua_util.cpp => src/util/lua_util_old.cpp
rename : src/util/lua_util.hpp => src/util/lua_util_old.hpp
Added more documentation
merged default

--HG--
branch : physicsfs