forked from Imagelibrary/rtems
* new-exceptions/bspsupport/, new-exceptions/bspsupport/ppc_exc.S, new-exceptions/bspsupport/ppc_exc_test.c, new-exceptions/bspsupport/vectors.h, new-exceptions/bspsupport/vectors_init.c, new-exceptions/bspsupport/irq.c, new-exceptions/bspsupport/ppc_exc_bspsupp.h, new-exceptions/bspsupport/ppc_exc_hdl.c, new-exceptions/bspsupport/ppc_exc_asm_macros.h, new-exceptions/bspsupport/nested_irq_test.c: New files. Added 'middleware' code for helping BSPs implement exception and interrupt handling and implementing the 'new' RTEMS IRQ API (which I personally dislike).