Renamed distamce to SI conform name length: CDistance->CLength

Started with aviation classes

src/blackmisc/pqallquantities.h

@@ -0,0 +1,18 @@
+#ifndef PQUNITSALL_H
+#define PQUNITSALL_H
+
+// All units / quantities, required for the instantiations of the template
+// especially as CRTP is used.
+// http://www.parashift.com/c++-faq-lite/separate-template-fn-defn-from-decl.html
+// http://en.wikipedia.org/wiki/Curiously_recurring_template_pattern
+
+#include "blackmisc/pqlength.h"
+#include "blackmisc/pqfrequency.h"
+#include "blackmisc/pqpressure.h"
+#include "blackmisc/pqmass.h"
+#include "blackmisc/pqspeed.h"
+#include "blackmisc/pqtemperature.h"
+#include "blackmisc/pqangle.h"
+
+
+#endif // PQUNITSALL_H