Fix compilation on CentOS 7

[SylvestreG]

Hi here is a fix to allow google test cmake to works on CentOS 7. On this cmake VERSION was not mendatory.

user > uname -a
Linux localhost.localdomain 3.10.0-957.10.1.el7.x86_64 #1 SMP Mon Mar 18 15:06:45 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
user > cmake -v
cmake version 2.8.12.2

Best Regards,

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[SylvestreG]

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[gennadiycivil]

Thank your for this contribution. Could you please elaborate and provide more information on exactly the issue / problems this is trying to address.
What is the before/after effect this would create and how is this beneficial?

[SylvestreG]

HI Gennadiy,

I was trying to build googletest on CentOS 7 using cmake. But It does not work, it produce an error.

An issue seems to be created : #1786 but If I am right it was not fixed on the sourcetree.

My PR fix this issue and allow people to use googletest on CentOS7.

Best Regards,

[gennadiycivil]

Also related, #2124