config.in: made configuration a bit more flexible.

config.in

@@ -24,6 +24,12 @@ for x in PHP=1 PYTHON=1 \
 	export SDECFGSET_TRG_ECN_$x
 done
 
-eval SDECFGSET_PKG_MYSQL_CLIENTONLY=1
-eval SDECFGSET_PKG_POSTGRESQL_CLIENTONLY=1
+bool "Include PostgreSQL contributed 3rd. Party Applications" \
+	SDECFG_PKG_POSTGRESQL_CONTRIB   1
+
+bool "Install only PostgreSQL libraries and client" \
+	SDECFG_PKG_POSTGRESQL_CLIENTONLY   0
+
+bool "Install only MySQL libraries and client" \
+	SDECFGSET_PKG_MYSQL_CLIENTONLY	1