For file sets produced by multiple file captures, match both
the number before time and the newer time before number format.
Distinguish them in the return value, since files of different
formats are not part of the same set.
Also handle files with a compression suffix as well, as we can
produce that in captures. Since in multi file captures compression
is done when switching files, allow file sets to have a mixture of files
compressed and uncompressed. When doing a multi file capture and
compressing, the last file is not compressed.
Add information to the user guide and release notes
Related to #12371
Move the top-level user-guide.adoc and developer-guide.adoc to their
respective source directores. This is in preparation for a future
toolchain revamp.
Move the wsug_graphics directory to wsug_src/images and wsdg_graphics
directory to wsdg_src/images. Copy common_graphics/* to the each images
directory and remove common_graphics. We only have five admonition
graphics; duplicating them lets us remove some build config overhead.
Rename wsluarm.adoc to wsdg_src/wsdg_lua_support.adoc.
Remove a dummy file.
Tested visually and by enabling `--failure-level=WARN`.
John Thacker