add compiler-generated output to .gitignore

.gitignore

@@ -1,16 +1,32 @@
+Makefile
 Makefile.in
 aclocal.m4
 autom4te.cache
 config.guess
 config.h.in*
+config.h
+config.log
+config.status
 config.sub
 configure
 depcomp
 install-sh
+libtool
 ltmain.sh
 missing
+openggsn.spec
+stamp-h1
 doc/Makefile.in
 ggsn/Makefile.in
 gtp/Makefile.in
 sgsnemu/Makefile.in
 *.swp
+*.o
+*.a
+*.la
+*.lo
+*.orig
+*.rej
+*/.deps
+*/.libs
+*/Makefile