add .gitignore

.gitignore

@@ -0,0 +1,31 @@
+*.lo
+*.la
+Makefile
+.deps
+.libs
+Makefile.fragments
+Makefile.global
+Makefile.objects
+acinclude.m4
+aclocal.m4
+autom4te.cache
+build
+config.guess
+config.h
+config.h.in
+config.log
+config.nice
+config.status
+config.sub
+configure
+configure.in
+include
+install-sh
+libtool
+ltmain.sh
+missing
+mkinstalldirs
+modules
+run-tests.php
+tmp-php.ini
+tests/rrdtool-bin.inc