Easy Beginner's Environment in QT Files

The ebe.log file is now located where the install script is located and it
includes practically all the text presented when the installation is done.
This will be handy for dealing with installation problems.

Universal installer
===================
The shell script "install_ebe.sh" will install ebe on a variety of Linux,
UNIX and UNIX-like systems including OS X Ubuntu, Fedora, Slackware, OS X,
openSUSE, Mageia, Manjaro and PCBSD.  

OS X
----
The installer is now much easier on OS X.  It will do the complete job,
including installing the Xcode command line tools if needed.

The installer will install the Xcode command lines tools and after that it
will use either Homebrew (preferred) or MacPorts to install a few things
including git and Qt, before using git to clone the ebe source code and
compiling it.  The script places a shell script named "ebe" in /usr/local/bin
(or /opt/local/bin to MacPorts).  The script executes ebe from within
the ebe.app directory.

The installer now places an ebe launcher on the desktop on OS X  which nicely
keeps track of the directory changes (from the menu).  It also place the ebe.app
(also OS X) in /usr/local/bin (or /opt/local/bin for MacPorts) so that OS X
won't complain about executing something from the Downloads directory.

Other systems
-------------
For Slackware the script must be run as root.  For the others sudo is used
only when needed, but the process does require root access using sudo.

Installing a different version
==============================
To install the latest version use

    sh install_ebe.sh

The script also can be used to update ebe or to select an older version.
If ebe is already installed, running the script again should quickly skip
through the installion of libraries and tools and then install ebe in a
minute or two.

To select an earlier version simply add the version number to the command
like this

    sh install_ebe.sh 2.6.0