How do I update LWJGL on 1.7.4 without a bin folder?
Solution 1:
Fix: First, rename your old lwjgl version directory. Second, copy the new lwjgl directory there, with the exact same file and subfolder structure as the old one. Next, use the Windows mklink command with the /j flag to create a directory junction, using the same name as the old lwjgl directory. This will make Minecraft think it's going to the old directory when, in fact, it's going to the new one.
Solution 2:
.minecraft\libraries\org\lwjgl\lwjgl is your new folder path for that. You can just update it from there.