Handle promotion based on architecture for all libraries

solves arduino/ArduinoCore-samd#80, which was caused by USBHost library not having a corresponding .h, thus bypassing the findBestLibraryWithHeader check

Author: facchinm

Diff for: src/arduino.cc/builder/includes_to_include_folders.go

@@ -150,6 +150,12 @@ func resolveLibrary(header string, headerToLibraries map[string][]*types.Library
 	}
 
 	if library == nil {
+		// reorder libraries to promote fully compatible ones
+		for _, platform := range platforms {
+			if platform != nil {
+				libraries = append(librariesCompatibleWithPlatform(libraries, platform), libraries...)
+			}
+		}
 		library = libraries[0]
 	}