Bashism fix: echo -e is a bashism and doesn't work when /bin/sh points to dash

Bashism fix: echo -e is a bashism and doesn't work when /bin/sh points to dash
    Instead of using "echo -e" we simply use printf. printf doesn't add a newline
    by default. So some places needed an extra \n in their string.
    Most of the change was done by hand, so please carefully review. This bug was
    spotted when trying to compile python-pyqt on my ubuntu hardy system.