Update manager is showing "Embedded GNU C Library: Binaries" under important security updates. 

Why is that? (I am on a laptop do i really need them?)

Update: 
Just to make it clear, I know what **C** is, and I usually program in it.
Hence, I am familiar with `glibc` not `eglibc`.

So, what is `eglibc` required for? or what is the difference between glibc & eglibc.