port: fix link order of babeltrace2.exe

port: fix link order of babeltrace2.exe

On both Cygwin and MINGW, the link order of static libraries in an exe
requires the dependent libraries to come first. In this case
'libbabeltrace2-param-parse.la' depends on 'libbabeltrace2.la' for the
'bt_value_bool_create_init' symbol and thus has to be listed before.

Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Change-Id: I64df3dddcc65233c63f61af3fe7a6a093990c203
Reviewed-on: https://review.lttng.org/c/babeltrace/+/2153
Reviewed-by: Simon Marchi <simon.marchi@efficios.com>
Tested-by: jenkins <jenkins@lttng.org>