[OE-core] gcc-4.7.inc wrong FILESPATH setting?

[Giuseppe Condorelli]

Hi All,

I've seen that, in the given .inc file, the FILESPATH is statically set to

FILESPATH = "${FILE_DIRNAME}/gcc-4.7"

This seems to avoid any FILESEXTRAPATHS_prepend usage on append file.
I need to add further patches for gcc-4.7.2 in my own meta layer but if I
set the FILESEXTRAPATHS_prepend as usual
nothing happens, sources are taken only from the directory set by FILESPATH.
Also I saw this setting was different in the past
FILESPATH = "${@base_set_filespath([ '${FILE_DIRNAME}/gcc-4.7' ], d)}"

Comments are welcome.
Cheers,
Giuseppe
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