adding type specifier node to AST
Merge branch 'master' of github.com:rieske/trans

Conflicts:
	src/semantic_analyzer/AbstractSyntaxTreeVisitor.h
	src/semantic_analyzer/SemanticAnalysisVisitor.cpp
	src/semantic_analyzer/SemanticAnalysisVisitor.h
	src/semantic_analyzer/SemanticXmlOutputVisitor.cpp
	src/semantic_analyzer/SemanticXmlOutputVisitor.h