[oe] [toolchain-layer][pull-request] Remove old toolchain recipes

[Thilo Fromm]

Hello *.*,

> Khem Raj (3):
>      eglibc-2.12: Remove
>      binutils-2.20: Remove
>      gcc-4.5: Remove

Removing gcc-4.5 would kill Texas Instruments DaVinci (dm814x, dm816x)
support. You only get a heavily patched 2.6.37 kernel from TI for
these (linux-ti81xx-psp_2.6.37). Unfortunately gcc >= 4.6 is unable to
build a kernel which boots for these platforms. After

Uncompressing linux ... booting the kernel

there is silence. We can reproduce this reliably on a ti8148-evm
development board. My best guess is it's because of an ancient kernel
being compiled with a very recent GCC.

Regards,
Thilo

-- 
Dipl.-Ing (FH) Thilo Fromm, MSc., Embedded Systems Architect
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