Do not use FeatureSummary to report found packages

The use of feature_summary in GaudiDependencies.cmake is a bad idea as it produces a lot of noise in downstream projects (see #181 (closed)).

This MR drops it to use the normal REQUIRED flag of find_package.

A better approach is to use find_dependency in GaudiConfig.cmake (see #205), but for the moment this is enough.

Closes #181 (closed)

/cc @fwinkl

changed milestone to %v36r2

added build system lhcb-gaudi-head labels

assigned to @clemenci

approved this merge request

• [2021-10-09 00:11] Validation started with lhcb-run2-gaudi-head#207
• [2021-10-10 00:03] Validation started with lhcb-gaudi-head#3061
• [2021-10-10 00:06] Validation started with lhcb-run2-gaudi-head#208
• [2021-10-11 00:05] Validation started with lhcb-gaudi-head#3062

merged

mentioned in commit d5b7e349