[BRLTTY] compile errors on osx

[Raoul MEGELAS]

Hello Dave,

Thanks for your corrections,
They work fine . But I get a problem with xsel.h

X11.h file not found.

The X11 include path is /opt/local/include/

I tried with -I/opt/local/include.
This gives the same error.

When I add the path in xsel.h (which is  a bad practice I know, 
This time it is /opt/local/include/x11/xlib.h which does not fine X11.h!!!
I must first solve this path problem before trying to compile bratty and test it.
I will report as soon as possible.

Raoul MEGELAS