Name::identifier() returns the identifier used to declare the name.

This means at the moment the PrettyPrinter isn't doing anything useful,
but the idea is that from here we can improve it to adapt the code to
a certain style.

Reviewed-by: Roberto Raggi

Mainly comma tokens. Referencing all tokens is necessary to be able to
implement pretty-printing based on the AST while maintaining user
formatting.

Reviewed-by: Roberto Raggi

Forms /**<, /*!<, ///< and //!<.

Done with Roberto Raggi.

Was taking the wrong state, causing it to appear in Doxygen style
instead of as a normal comment.

Fix by Roberto Raggi

Done with Roberto Raggi

This reverts commits:

c721304a
885d908e
a0909989
fb4ad59d
0a9a67cf
0d1624d4
d018cfd5
0504fdd0
a2fd10fe

Conflicts:

	src/plugins/cpptools/cppcodecompletion.cpp

Reviewed-by: Roberto Raggi

Introduced UndefinedType class to replace null pointer.

Done with Roberto Raggi