add gitignore patch

.gitignore

@@ -0,0 +1,22 @@
+aclocal.m4
+AUTHORS
+autom4te.cache/
+ChangeLog
+config_ac.h
+config.c
+config.guess
+config.log
+config.status
+config.sub
+configure
+depcomp
+.deps/
+install-sh
+libtool
+ltmain.sh
+Makefile
+Makefile.in
+missing
+NEWS
+README
+config_ac-h.in