Rename 'hello{2,3}.spec.' -> 'hello{2,3}.specfile'

These filenames are invalid on win32.
We don't want to include multiple .spec files for make rpm.
rpmbuild --sign is not supported anymore.
Also include hello3.specfile in EXTRA_DIST.
Escape some macros in the elfutils.spec.in file comments.

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Signed-off-by: Mark Wielaard <mark@klomp.org>
8 files changed