New Cmake version requirement

[tking53]

This isn't so much as an issue as me just bringing this to light.
Somewhere along the line (probably in #269) a requirement for cmake 3.1 or higher was introduced. This isn't an issue for most of our personal laptops as we all use relatively up to date distros. However, for the DAQs, and servers (kqxhc, donda etc) that use CentOS, its a problem; since even CentOS7 still uses cmake 2.8.12.2 by default. When i switch to cmake3 it compiles alright but I'm not building the ACQ stuff or against the ORPHAS libs.

Another reason I'm bringing this up, is the cmake bug we ran into while setting up the BILL laptop for the IS632 experiment #255 and #256 (which im still not certain was human error when installing ORPHAS or something else specific to the BILL laptop)

The resolution of this would be confirmation that the BILL issues were temporary, and that we update the WIKI with the new requirement.

[ksmith0]

I do not believe that the bill issues were due to cmake.

[ksmith0]

Although #256, may have been a problem with curses 2.8 and resolved in 3.

[tking53]

then it sounds like we can just update the dependency list on the wiki. I think i should have the summer undergrad take 2 days and reinstall everything on bill to be sure. Since if I remember right we cant put centos 7 on it because of some fan issue (@spaulaus can confirm that)

[spaulaus]

There was some overheating issue with CentOS7. That's correct. CMake3 is available by adding a new repository entry, or can be compiled and installed on the machine.