2.6.13-rc1 CONFIG_DEBUG_SPINLOCK is useless on SMP

2.6.13-rc1 built with SMP=Y and DEBUG_SPINLOCK=y.  That uses
kernel/spinlock.c instead of the inline definitions of the spinlock
functions.  Alas only the inline definitions test for DEBUG_SPINLOCK=y,
none of the code in in spinlock.c has any debug facilities.

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  - From: Ingo Molnar <[email protected]>

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