Changed GPL license example to make it more clear

@itemize @minus

@item

You link a part of the of @strong{MySQL} that has a GPL Copyright to a

program that is not free software (embedded usage of the @strong{MySQL}

server).  In this case your application would also become GPL through the

clause in the GPL license that acts as a virus.  By licensing @strong{MySQL} 

from us under a commercial license you will avoid this problem.

You link a program, that is not free software, with code from the

@strong{MySQL} server or clients that has the GPL copyright. This

happens for example when you use @strong{MySQL} as an embedded server

in your applications or when you add not free extensions to the

@strong{MySQL} server.  In this case your application/code would also

become GPL through the GPL license that acts as a virus.  By licensing

@strong{MySQL} server from @strong{MySQL AB} under a commercial

license you will avoid this problem.

@item

You have a commercial application that ONLY works with @strong{MySQL}

    then 

      MT_LD_ADD="$OVERRIDE_MT_LD_ADD"

    else

      MT_LD_ADD="-L \$(top_srcdir)/mit-pthreads/obj/ -lpthread.a"

      MT_LD_ADD="-L \$(top_srcdir)/mit-pthreads/obj/ -lpthread"

    fi

    AC_SUBST(MT_LD_ADD)

    echo ""