...as src/tools/cplusplus-keywordgen so it will not get lost. Taken from
[1] in its current revision (e7831d6).

The utility generates code that classifies identifers/keywords. Most
probably the following files from Qt Creator were generated by it or are
at least based on its output:

 src/libs/3rdparty/cplusplus/Keywords.cpp
 src/libs/3rdparty/cplusplus/ObjectiveCTypeQualifiers.cpp
 src/libs/glsl/glslkeywords.cpp
 src/plugins/cpptools/cppdoxygen.cpp

We will use the utility to update the known qdoc/doxygen keywords. The
clang code model will also profits from this.

[1] https://github.com/robertoraggi/cplusplus/blob/master/tools/kwgen.cpp



Change-Id: I604f2028d32fd9a48bd6f84bef7264b6d2beed7d
Reviewed-by: David Schulz <david.schulz@theqtcompany.com>