platform.txt - to work as referred package

[JAndrassy]

{build.core.path} used instead of {runtime.platform.path} to work as
referred package for Arduino 3rd-party-Hardware-specification chapter
"Referencing another core, variant or tool"

solving #5769

note: the keys removed at release are unchanged. referring the package in dev setup doesn't work

comment: This will allow end users to define preferred sets of boards settings (example) and manufacturers of esp8266 boards could create 'satellite' board packages using core and tools of this main esp8266 package.

[JAndrassy]

after 9790e1c it is unclear to me which lines will stay in platform.txt after release.

[d-a-v]

I fixed conflicts by hand. You need to check whether it still works as referred package.
You will also need to git submodule update --init

edit there are some {runtime.platform.path} left and empty lines that I may have been added while fixing by hand

[JAndrassy]

I left {runtime.platform.path} in the lines that are removed at release. The runtime.tools.* work with {build.core.path} too, but the tools.* don't.
One of the runtime.tools.*, the signing.py stayed in release in 2.5.0, so I changed the path for it to {build.core.path}
It is unclear know, I think, which of the runtime.tools.* will stay for release, so we can simply use {build.core.path} in all runtime.tools.*.
I will see if I can test it by making a fake release installation. Before I tested it on 2.5.0 release.

[JAndrassy]

some entries (tools.^) don't work in dev 'mode' with {build.core.path}/../.., but need it after installation to work as referred package. most prominent problematic entry is

tools.esptool.upload.pattern="{cmd}" "{runtime.platform.path}/tools/upload.py" "{runtime.platform.path}/tools/pyserial" "{runtime.platform.path}/tools/esptool/esptool.py" --chip esp8266 --port "{serial.port}" --baud "{upload.speed}" "{upload.verbose}" {upload.erase_cmd} --end  --chip esp8266 --port "{serial.port}" --baud "{upload.speed}" "{upload.verbose}" write_flash 0x0 "{build.path}/{build.project_name}.bin" --end

I don't know what to do with it? It looks like it is not a problem of the changes, but I missed something as I tested it before. It looks like I must close this for now.

[d-a-v]

Serial upload with windows was broken, and has just been fixed (#5796).
Maybe you can retry with your changes.

[JAndrassy]

Serial upload with windows was broken, and has just been fixed (#5796).
Maybe you can retry with your changes.

I am on Linux. Things worked in git version only not as referred package.