update .gitignore

.gitignore

@@ -16,3 +16,15 @@ doc/pt_BR/
 doc/examples/sources.list
 marks.bzr
 marks.git
+debian/*.log
+debian/*.substvars
+debian/*.debhelper
+debian/apt-doc
+debian/apt
+debian/apt-utils
+debian/libapt-pkg4.12
+debian/libapt-inst1.5
+debian/libapt-pkg-dev
+debian/libapt-pkg-doc
+debian/apt-transport-https
+debian/files