Update name of Ubuntu Dependencies

Description

In INSTALL there are some dependencies which have new names on Debian / Ubuntu.
On my current aarch64 system there is the following ubuntu:
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.1 LTS"

The following names have changed for Ubuntu and Debian:
libX11-dev -> libx11-dev
libXt-dev -> libxt-dev

Demonstration:

With corrected names:

Acceptance Criteria

None

Assignee

Philipp Rehs

Reporter

Philipp Rehs

Severity

None

OS

None

Start Date

None

Pull Request URL

Story Points

1

Components

Affects versions

Priority

Low
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