When a dependency was already found, find_dependency did not search it
again. While this works in basic case, it does not when there are
components as the check does not take components into account.
Given the fact that there is no documentation about this optimization and
that the correct implementation is not trivial as it would require
changes in find_package to have the list of components already found we
always search dependencies.
Fix#17583.
Run the `clang-format.bash` script to update all our C and C++ code to a
new style defined by `.clang-format`. Use `clang-format` version 6.0.
* If you reached this commit for a line in `git blame`, re-run the blame
operation starting at the parent of this commit to see older history
for the content.
* See the parent commit for instructions to rebase a change across this
style transition commit.
