Run the `Utilities/Scripts/clang-format.bash` script to update
all our C++ code to a new style defined by `.clang-format`.
Use `clang-format` version 3.8.
* 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.
Compiler INFO strings built at preprocessing time encode information
that must appear as a string literal in the resulting binary. We must
make sure the strings appear in the final binary no matter what compiler
and flags are used. The previous implementation worked in most places
but failed with the GNU linker's --gc-sections option which managed to
discard the string. Instead we make the program return value depend on
an element of the string indexed by a runtime program parameter, which
absolutely requires the string to be present.