* ar71xx-generic: only create manifest alias for Rocket M5

This follow up the discussion done in #2070 by not  creating a symlink
for the Rocket M5. Images for the Rocket M2 can still be flashed on a
Rocket M5.

This change will prevent the Rocket M5 from appearing in Firmware
selectors. Existing devices will still receive updates, as the device
name is still referenced for the device name expected by the M5.

Closes #2070

* docs: remove Rocket M5 from supported devices

Fixes #2113

Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>

The rewrite of the feature handling introduced multiple major bugs. One
of them was caused by the way Lua's logical operators work:

An expression of the form

    _'autoupdater' and _'web-advanced'

would return 'web-advanced' rather than the boolean true when _ returned
both strings unchanged (because the features are enabled).

As entries with more than a single feature name in their expressions did
not set no_default, Gluon would then attempt to add gluon-web-advanced to
the package selection, as web-advanced is a "pure" feature.

To fix this, and get rid of the annoying nodefault, separate handling of
"pure" feature and handling of logical expressions into two separate
functions, called feature() and when(). To simplify the feature
definitions, the package list is now passed directly to these functions
rather than in a table with a single field 'packages'.

Fixes: ee5ec5af ("build: rewrite features.sh in Lua")

Fix a number of issues related to the vertical alignment and margins of
list elements.

(cherry picked from commit bf8c3bab)

Closes #1979
Closes #2062

(cherry picked from commit 582d2d69)

Document the behavior of the Outdoor mode when preserve_channels is
enabled.

Allow replacing the default OSM layer with a custom XYZ layer in
site.conf.

The `features` file is converted to a Lua-based DSL.

A helper function `_` is used in the DSL; this will return the original
string for enabled features, and nil for disabled features. This allows
to use boolean operations on features without making the code too
verbose.

Besides having more readable and robust code, this also fixes the bug
that all files `packages/*/features` were evaluated instead of only
using the feature definitions of currently active feeds.

v2020.2.x has been branched, so the current master is v2020.2+.

This change stores a Kernel with Debug-Symbols for the current
architecture in a new output directory '<outputdir>/debug'.
This allows a developer or operator of a network to store the kernel
along with the actual images. In case of a kernel oops the debug
information can be used with the script
'scripts/decode_stacktrace.sh' in the kernel source tree to get the
names to the symbols of the stack trace.

OpenWRT already provides the CONFIG_COLLECT_KERNEL_DEBUG -option that
creates a kernel with debug-symbols in the OpenWRT output directory.
This change enables this option and copies the generated kernel to the
gluon output directory.

Signed-off-by: Chrissi^ <chris@tinyhost.de>

None of the other release pages have a "v" before the version number.

Signed-off-by: David Bauer <mail@david-bauer.net>

Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit 5a7ac058)

This summaries giving an overview of a scripts function and a short summary
how it's doing this. Only the scripts are covered, that are used by the
Freifunk-Berlin firmwarebuiler too.

[Matthias Schiffer: slightly reworded some descriptions]

A microsecond is commonly abbreviated as µs. This prevents confusions
between micro- (µs) and milliseconds (ms).

This adds support for the beacon interval to be set on a per-band base.
This has the potential to reduce the amount of airtime used up for
sending beacon frames.

The 'preserve' flag can be used to mark a peer so it is not removed or
modified on upgrades. In addition, groups containing preserved peers are
not removed.

Fixes: #557

Closes #1993

(cherry picked from commit 7f3a3042)

(cherry picked from commit 4bfcd6ae)

Allows reconfigurtion of remote syslog from within site.conf.

Conflicts with the gluon-web-logging package as user made changes
will be overwritten, because this package will reconfigure the syslog
destination on every upgrade.

Resolves #1845

OpenWRT 19.07 enables urngd by default, so haveged is redundant.

This device has broken Ethernet on both ports.

Remove support for those devices. for now, as there was no feedback from
the original author.

Closes #1943