Analyser: some minor cleaning up.
Analyser: some minor cleaning up.

Some of our units tests have a name which is a C++ keyword, so use `_xxx_` since otherwise `not` would result in some strange Clang formatting.

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