Fix setup-libraries.sh typo: brew install ... makedependc

[ghost]

I just installed homebrew on OS X, cloned the latest master of llmr-native, and am making my first attempt at building it.

When I ran setup-libraries.sh, it said:

$ ./setup-libraries.sh
Please run "brew install autoconf automake libtool makedependc cmake" and then re-run ./setup-libraries.sh

When I copied and pasted that brew command, it said this:

$ brew install autoconf automake libtool makedependc cmake
Error: No available formula for makedependc 
Searching taps...

Then when I did this, it worked:

$ brew install makedepend
==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/makedepend-1.0.5.mavericks.bottle.tar.gz
######################################################################## 100.0%
==> Pouring makedepend-1.0.5.mavericks.bottle.tar.gz
🍺  /usr/local/Cellar/makedepend/1.0.5: 7 files, 92K