Print configuration at the end of configure

This makes it easy to know which things will be enabled or
disabled, depending which deps were found or not found.

configure.ac

@@ -198,3 +198,16 @@ src/common/httpp/Makefile src/common/thread/Makefile src/common/log/Makefile
 src/common/net/Makefile src/common/timing/Makefile doc/Makefile web/Makefile
 web/assets/Makefile web/assets/css/Makefile web/assets/font/Makefile
 admin/Makefile admin/includes/Makefile win32/Makefile examples/Makefile tests/Makefile])
+
+echo "
+Icecast configuration
+---------------------
+Version       : ${VERSION}
+cURL          : ${have_curl}
+TLS (openSSL) : ${have_openssl}
+
+Format/Codec support:
+  Ogg         : ${have_ogg}
+  Theora      : ${have_theora}
+  Speex       : ${have_speex}
+  Kate        : ${have_kate}"