From: Markus Gutschke <markus@google.com>

Gcc reserves %ebx when compiling position-independent-code on i386. This 
means, the _syscallX() macros in include/asm-i386/unistd.h will not 
compile. This patch is against 2.6.15.6 and adds a new set of macros 
which will be used in PIC mode. These macros take special care to 
preserve %ebx.

The bug can be tracked at http://bugzilla.kernel.org/show_bug.cgi?id=6204

Signed-off-by: Markus Gutschke <markus@google.com>

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