Java 11 is needed to install on Eclipse 2020-06

[tsgow...@gmail.com]

Seems like cmake4eclipse now requires Java 11 with Eclipse 2020-06. The minimum requirements mention Java 8.

**Describe the bug**

cmake4eclipse installation fails with Eclipse 2020-06

**To Reproduce**

Steps to reproduce the behavior:

1. Install Eclipse for C/C++ 2020-06

2. Drag the installation link for cmake4eclipse

**Useful Information**

- cmake4eclipse version: 

- Windows 10

***What is in Eclipse's Error Log?***

Cannot complete the install because some dependencies are not satisfiable

  Software being installed: a.jre.javase 14.0.0

  Software currently installed: C/C++ Autotools support 9.11.1.202004012023 (org.eclipse.cdt.autotools.feature.group 9.11.1.202004012023)

  Cannot satisfy dependency:

    From: C/C++ Autotools support 9.11.1.202004012023 (org.eclipse.cdt.autotools.feature.group 9.11.1.202004012023)

    To: org.eclipse.equinox.p2.iu; org.eclipse.tools.templates.freemarker.java11 [1.1.100.202001140305,1.1.100.202001140305]

  Cannot satisfy dependency:

    From: Template Engine Freemarker Support (Java 11) 1.1.100.202001140305 (org.eclipse.tools.templates.freemarker.java11 1.1.100.202001140305)

    To: osgi.ee; (&(osgi.ee=JavaSE)(version=11))

**Additional context**

Issue fixed by installing Java JDK 11. The requirements mentions minimum Java version as Java 8