Add the admiral modules. (#730)

* Added Admiral to gitmodules

* Added Admiral to Makefile

* Add Admiral to plugins.cpp.

* README.md

* Add Admiral to README.md

* Add Admiral to DIFFERENCES.md

* Add admiral to LICENSES.md

* Added the admiral plugin.

plugins/Makefile

@@ -346,6 +346,11 @@ PLUGIN_FILES += $(wildcard AaronStatic/src/*.cpp)
 # modules/types which are present in other plugins
 AARONSTATIC_CUSTOM = RefreshCounter
 
+# --------------------------------------------------------------
+# Admiral
+
+PLUGIN_FILES += $(filter-out admiral/src/plugin.cpp,$(wildcard admiral/src/*.cpp))
+
 # --------------------------------------------------------------
 # AmalgamatedHarmonics
 
@@ -2129,6 +2134,13 @@ $(BUILD_DIR)/AaronStatic/%.cpp.o: AaronStatic/%.cpp
 		-DpluginInstance=pluginInstance__AaronStatic \
 		-Dinit=init__AaronStatic
 
+$(BUILD_DIR)/admiral/%.cpp.o: admiral/%.cpp
+	-@mkdir -p "$(shell dirname $(BUILD_DIR)/$<)"
+	@echo "Compiling $<"
+	$(SILENT)$(CXX) $< $(BUILD_CXX_FLAGS) -c -o $@ \
+		$(foreach m,$(ADMIRAL_CUSTOM),$(call custom_module_names,$(m),admiral)) \
+		-DpluginInstance=pluginInstance__admiral
+
 $(BUILD_DIR)/alefsbits/%.cpp.o: alefsbits/%.cpp
 	-@mkdir -p "$(shell dirname $(BUILD_DIR)/$<)"
 	@echo "Compiling $<"