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

These checks are necessary cause of a recent change in the C++ engine.

Reviewed-by: Roberto Raggi