Include cmConfigure.h via angle-brackets to aid bootstrap

Since commit v3.9.0-rc1~281^2 (Use quotes for non-system includes,
2017-04-11) we include `cmConfigure.h` via `""` instead of `<>`.
Unfortunately this breaks the `bootstrap` script when run more than once
in an in-source build.  In that case `cmConfigure.h` is generated next
to the source files that include it, so `""`-style includes prevent the
`Bootstrap.cmk/cmConfigure.h` file from being included during bootstrap.

Fix this by converting back to `#include <cmConfigure.h>`:

    git grep -l 'include "cmConfigure\.h"' |
      xargs sed -i 's/"cmConfigure.h"/<cmConfigure.h>/'

Add blank lines in a few files to tell `clang-format` not to move
these include lines.

Fixes: #17082
39 jobs for include-style-cmConfigure
Status Job ID Name Coverage
  External
passed cdash

failed cmake-dash3win7-windows-debug-vs2015

failed cmake-dash3win7-windows-release-ninja

passed cmake-hythloth-linux-debug-makefiles+sphinx

passed cmake-hythloth-linux-release-lint-iwyu-tidy

passed cmake-moonshade-osx-debug-ninja

passed cmake-moonshade-osx-release-makefiles

passed ghostflow-branch-check-master

passed ghostflow-commit-check

failed cmake-dash3win7-windows-debug-vs2015

01:49:06

failed cmake-dash3win7-windows-debug-vs2015

failed cmake-dash3win7-windows-debug-vs2015

failed cmake-dash3win7-windows-debug-vs2015

failed cmake-dash3win7-windows-debug-vs2015

failed cmake-dash3win7-windows-release-ninja

00:20:17

failed cmake-dash3win7-windows-release-ninja

failed cmake-dash3win7-windows-release-ninja

failed cmake-dash3win7-windows-release-ninja

failed cmake-dash3win7-windows-release-ninja

passed cmake-hythloth-linux-debug-makefiles+sphinx

00:33:54

passed cmake-hythloth-linux-debug-makefiles+sphinx

passed cmake-hythloth-linux-debug-makefiles+sphinx

passed cmake-hythloth-linux-debug-makefiles+sphinx

passed cmake-hythloth-linux-debug-makefiles+sphinx

passed cmake-hythloth-linux-release-lint-iwyu-tidy

00:23:00

passed cmake-hythloth-linux-release-lint-iwyu-tidy

passed cmake-hythloth-linux-release-lint-iwyu-tidy

passed cmake-hythloth-linux-release-lint-iwyu-tidy

passed cmake-hythloth-linux-release-lint-iwyu-tidy

passed cmake-moonshade-osx-debug-ninja

00:07:33

passed cmake-moonshade-osx-debug-ninja

passed cmake-moonshade-osx-debug-ninja

passed cmake-moonshade-osx-debug-ninja

passed cmake-moonshade-osx-debug-ninja

passed cmake-moonshade-osx-release-makefiles

passed cmake-moonshade-osx-release-makefiles

passed cmake-moonshade-osx-release-makefiles

passed cmake-moonshade-osx-release-makefiles

passed cmake-moonshade-osx-release-makefiles

00:08:34