Thierry Reding authored Mar 28, 2018 and Adam Jackson committed Mar 28, 2018

The newline in the middle of the awk expression confuses Meson and
causes it to pass only the string before the newline to awk, which will
subsequently fail because it encounters an unterminated string.

One fix would be to escape the newlines ('\\n'), but that causes the
newline to end up in the pkg-config file and separate the ABI version
lines by blank lines.

Instead, simply drop the newlines to make the generated pkg-config file
look more like the one generated as part of the autotools-based build.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>