[WIP] Add OS X 10.10 profile

[certik]

To build this, use the profile from #776 and put its hash into the PROLOGUE.

This is still a work in progress.

The following PRs must be merged for this to build:

• git: allow to set NO_APPLE_COMMON_CRYPTO=1 #773
• Use Clang's linker to make AVX instructions work #774
• Update ncurses to 5.9-20141206 #778
• Unset MACOSX_DEPLOYMENT_TARGET for all cmake #780

Some of the PRs are more of a hack to get it working and we need to figure out a nice solution before they can be merged.

[cekees]

How far are we from getting 10.10 merged into master? Looks like we've been stuck on the two remaining unmerged PR's for a while, and I can think of a nice way to handle them (and don't have an os x machine to experiment on).

[certik]

My OS X machine doesn't work at the moment, so I can't work on it. Nor I have time at the moment. Do you depend on this?

[cekees]

I don't have and OS X machine, but a couple of students /postdocs working on proteus do. I can just merge these PR's into stable/proteus as a temporary fix unless you have a better idea.

[certik]

If you need it for proteus, you can merge it there, but do not merge the hacks into the master, until we figure out a solution. I'll try to get my OS X machine working again and resume the work.

[vbraun]

FWIW I can provide access to the Sage OSX buildbot machine if somebody wants to work on it