I broke this by accident in 5031de2, likely by misreading the $0. What
the line was intended to do was change to the directory the script is
located in when the script starts, this allows the script to be started
from any location.
Typically this isn't necessary functionality, but for Mac OS it's
important because if you double-click the script (the typical way to run
it) it is started from the user's home directory. Due to this I also
updated the Mac OS distribution test to run the script in this way so
that it's closer to how a user will run it.
Fixes: #218
Having two separate files for the compile output is just too confusing,
and it adds an extra file users need to look at and give us when there
are issues. This change simply makes qb64.bas send both the stdout and
stderr output to compilelog.txt.
Fixes: #61
windres has a handy feature of allowing us to feed it an executable and
it will give an error code depending on whether that executable has a
resource section or not. We can use that feature to create a quick test
to verify the distributable has the resource information on it.
