vim: Disable vim automatic visual mode on mouse select

when mouse select, vim automatically turns into
visual mode, this is not convienent when copy
and paste in vim with mouse select. create this
setting for root user.

Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>

config/rootfiles/common/vim

@@ -1,4 +1,5 @@
 etc/vimrc
+root/.vimrc
 usr/bin/ex
 usr/bin/rview
 usr/bin/rvim

config/vim/.vimrc

@@ -0,0 +1 @@
+set mouse-=a

lfs/vim

@@ -83,8 +83,7 @@ $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
 
 	ln -svf vim /usr/bin/vi
 	install -m 644 $(DIR_SRC)/config/vim/vimrc /etc/vimrc
-	touch /root/.vimrc
-	echo "set mouse-=a" >> /root/.vimrc
+	install -m 644 $(DIR_SRC)/config/vim/.vimrc /root/.vimrc
 
 	@rm -rf $(DIR_APP)
 	@$(POSTBUILD)