load_dsl load order dependency

[korzry]

In dsl.rb, the dsl_load method uses a glob to find the dsl files to load. This causes the load order to be somewhat random. If precompiled.rb is loaded after grid_pane.rb, grid_pane's will no longer be added to the parent node when using the dsl syntax. Loading precompiled.rb first before the other core_ext file avoids this problem.