Windows: disable warning C4275.
Windows: disable warning C4275.

From https://msdn.microsoft.com/en-us/library/3tdb471s.aspx: C4275 can
be ignored in Visual C++ if you are deriving from a type in the
Standard C++ Library, compiling a debug release (/MTd) and where the
compiler error message refers to _Container_base.

hsorby/libcellml,cellml/libcellml,hsorby/libcellml,MichaelClerx/libcellml,hsorby/libcellml,nickerso/libcellml,cellml/libcellml,nickerso/libcellml,hsorby/libcellml,MichaelClerx/libcellml,cellml/libcellml,MichaelClerx/libcellml,cellml/libcellml,nickerso/libcellml,nickerso/libcellml