Binary compatibility

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Arm binary level calling conventions come in three incompatible flavours. Hardware stays the same, but libc/linker etc are not compatible due to different calling convention. Code compiled on one version will generally fail on another version.

Arm - OABI. The old one, and the one openmoko OM2007.1.

Arm - EABI. The new one, used by OM2007.2 and later versions. Should be slightly faster. Angstrom distribution also uses this. (See )

Arm - big endian.

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