gitignore: ignore all build artifacts

Change-Id: Ie253062060da2ebf22f1aaf99090c0f144fde52e
diff --git a/.gitignore b/.gitignore
index 6424155..dd8c4d6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,10 @@
 .*.swp
 configure
 INSTALL
+Makefile
+aclocal.m4
+binaries
+config.log
+config.status
+libsmpp34.pc
+libtool