Recompiling Beta 1.7.3 in v1.0 doesn't work, while it does in v1.0-pre3

[MyNameIsTrez]

1. Download RetroMCP v1.0
2. Download the right Java version to make the GUI's startup popup disappear
3. Select Beta 1.7.3 as the current version
4. Press Decompile
5. In src/minecraft/net/minecraft/src/GuiMainMenu.java, change "Minecraft Beta 1.7.3" to "Minecraft Beta Foo" on line 118.
6. Press Recompile
7. Press MCP > Start Client
8. Note how with v1.0 you do not see the in-game menu string being Minecraft Beta Foo, while you do if you follow these steps with v1.0-pre3.