Enclose the fortran IT in a profile

We activate this integration by default only if /usr/bin/gfortran
is found.

This should help BuildHive run the integration tests.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Enclose the toolchain IT in a profile

We activate this integration by default only if
/home/gene099/.m2/toolchains.xml is present.

This should help BuildHive run the integration tests.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Allow specify whether to run the ITs in debug mode from the
command-line

Passing the '-Dinvoker.debug=true' command-line argument will make
sure that target/it/*/build.log will contain detailed information.

This should help us debug the remaining integration test issue with
BuildHive.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>