add support for option(host_build)

Change-Id: I7b16d13b0f94d0a2e4b4743a40dad9bd8b8b9698
Reviewed-by: Daniel Teske <daniel.teske@nokia.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>

src/shared/proparser/proitems.h

@@ -213,12 +213,16 @@ public:
     bool isOk() const { return m_ok; }
     void setOk(bool ok) { m_ok = ok; }
 
+    bool isHostBuild() const { return m_hostBuild; }
+    void setHostBuild(bool host_build) { m_hostBuild = host_build; }
+
 private:
     ProItemRefCount m_refCount;
     QString m_proitems;
     QString m_fileName;
     QString m_directoryName;
     bool m_ok;
+    bool m_hostBuild;
 };
 
 class ProFunctionDef {