Removed all uses of setjmp.h in MAME. The only place where

it is still referenced is cpu/powerpc/ppc.c. I couldn't find 
any case in which this file would be compiled using the 
current build system. Nonetheless documented use using 
PPC_H_INCLUDED_FROM_PPC_C define. [Couriersud]

src/emu/cpu/powerpc/ppc.c

@@ -5,6 +5,9 @@
 #include <setjmp.h>
 #include "emu.h"
 #include "debugger.h"
+
+/* avoid including setjmp.h and defining jump buffer if not included from here */
+#define PPC_H_INCLUDED_FROM_PPC_C
 #include "ppc.h"
 
 // PLL Configuration based on the table in MPC603EUM page 7-31

src/emu/cpu/powerpc/ppc.h

@@ -14,7 +14,9 @@
 #ifndef __PPC_H__
 #define __PPC_H__
 
+#ifdef PPC_H_INCLUDED_FROM_PPC_C
 #include <setjmp.h>
+#endif
 #include "cpu/vtlb.h"
 #include "cpu/drcfe.h"
 #include "cpu/drcuml.h"
@@ -512,7 +514,9 @@ protected:
 	write32_delegate m_ext_dma_write_cb[4];
 
 	/* PowerPC function pointers for memory accesses/exceptions */
+#ifdef PPC_H_INCLUDED_FROM_PPC_C
 	jmp_buf m_exception_jmpbuf;
+#endif
 	UINT8 (*m_ppcread8)(address_space &space, offs_t address);
 	UINT16 (*m_ppcread16)(address_space &space, offs_t address);
 	UINT32 (*m_ppcread32)(address_space &space, offs_t address);

src/emu/cpu/uml.c

@@ -37,7 +37,6 @@
 #include "emu.h"
 #include "drcuml.h"
 #include "drcumlsh.h"
-#include <setjmp.h>
 
 using namespace uml;