Updated release instructions for SCIFIO

Changed directory to reflect new SCIFIO structure.
Provide documentation how to upload new releases to the update site

Requested by Curtis Rueden because he does not want me to feel like
I am special, being the only one who knows how to do it.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Merge branch 'releases'

Adds information how to upload releases to the update site.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Updater: fix coding style

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Module: fix javadoc typo
Updater (cmd-line): clarify message about re-uploading obsolete files

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Updater: uploading a dependency *must not* cause mark it as missing

When uploading, we check for common conflicts. One such conflict is
when dependencies are not available on the update site. But if we
are about to upload said dependency, it is not missing...

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Updater: uploading an obsolete dependency *cannot* make it "missing"

When uploading, we check for common conflicts. One such conflict is
when dependencies are not available on the update site. But if we
are about to upload said dependency, even if it was marked obsolete
before, it is not missing...

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Merge branch 'upload-obsolete-files'

These fixes were required to (re-)upload obsolete files to the ImageJ
and the Fiji update site during the release of ImageJ 2.0.0 beta 7.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>