Added the InsertionPointLocator.

For answers to questions about where to insert a snippet/chunk of C++ code. Ok,
currently it will only find the One And Only place to insert method
declarations in classes, and it will need some tuning.

src/libs/cplusplus/cplusplus-lib.pri

@@ -48,7 +48,8 @@ HEADERS += \
     $$PWD/pp-cctype.h \
     $$PWD/pp-engine.h \
     $$PWD/pp-macro-expander.h \
-    $$PWD/pp-scanner.h
+    $$PWD/pp-scanner.h \
+    $$PWD/InsertionPointLocator.h
 
 SOURCES += \
     $$PWD/SimpleLexer.cpp \
@@ -72,6 +73,7 @@ SOURCES += \
     $$PWD/Macro.cpp \
     $$PWD/pp-engine.cpp \
     $$PWD/pp-macro-expander.cpp \
-    $$PWD/pp-scanner.cpp
+    $$PWD/pp-scanner.cpp \
+    $$PWD/InsertionPointLocator.cpp
 
 RESOURCES += $$PWD/cplusplus.qrc