adding .gitignore

.gitignore

@@ -0,0 +1,31 @@
+tags
+.deps
+*.o
+Makefile
+Makefile.in
+aclocal.m4
+autom4te.cache/
+config.guess
+config.h
+config.h.in
+config.log
+config.status
+config.sub
+configure
+depcomp
+gram.c
+gram.h
+gram.dot
+install-sh
+missing
+radvd
+radvd.8
+radvd.conf.5
+radvdump
+radvdump.8
+redhat/radvd.spec
+scanner.c
+scanner.h
+stamp-h1
+ylwrap
+*.swp