Auto merge of #915 - asajeffrey:mac-makedepend, r=jdm
Auto merge of #915 - asajeffrey:mac-makedepend, r=jdm

Add makedepend package on MacOS

Add the makedepend package on MacOS, to deal with failed builds like https://build.servo.org/builders/magicleap/builds/4

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servo/saltfs,servo/saltfs