new north arrows section

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@56671 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/symbol/Makefile

@@ -7,7 +7,7 @@ include $(MODULE_TOPDIR)/include/Make/Lib.make
 
 SYMBOL_SRC := $(wildcard symbol/*/*)
 SYMBOL_DST := $(patsubst symbol/%,$(ETC)/symbol/%,$(SYMBOL_SRC))
-SYMBOL_DIRS := $(patsubst %,$(ETC)/symbol/%, demo basic extra geology)
+SYMBOL_DIRS := $(patsubst %,$(ETC)/symbol/%, demo basic extra geology n_arrows)
 
 default: lib
 	$(MAKE) $(SYMBOL_DST)