[complib:mpfr] Fix building MPFR in some weird cases

The tmul test uses a compiled-in input file in $(srcdir).
The problem is that the Makefile passes it unquoted. The C code
tries to stringify it using clever macros, which may *usually* work.

In my case the source directory was named:
.../toolchain-powerpc-e500v2-linux-gnuspe-1.0-2.fc10/.../tests
And guess what? During testing I found out the program fails because
it tries to open:
.../toolchain-powerpc-e500v2-1-gnuspe-1.0-2.fc10/.../tests

Yes, CPP tokenized the macro before stringifying it and not surprisingly
the 'linux' part was converted to 1.
[on Fedora-10: cpp (GCC) 4.3.2 20081105 (Red Hat 4.3.2-7)]

So the attached patch simplify the macros and pass the path as string
from the Makefile.

Sometime around 2.4.22-23, the mips pt_regs.h fields were reordered, breaking

coredump handling by gdb for current kernels.  Update the hardcoded constants

to reflect the change.

--- gdb-6.2.1/gdb/mips-linux-tdep.c-orig	2004-10-29 14:23:55.000000000 -0500

+++ gdb-6.2.1/gdb/mips-linux-tdep.c	2004-10-29 14:26:44.000000000 -0500

@@ -53,12 +53,22 @@

 #define EF_REG0			6

 #define EF_REG31		37

+

+#if 0

 #define EF_LO			38

 #define EF_HI			39

 #define EF_CP0_EPC		40

 #define EF_CP0_BADVADDR		41

 #define EF_CP0_STATUS		42

 #define EF_CP0_CAUSE		43

+#else

+#define EF_CP0_STATUS		38

+#define EF_LO			39

+#define EF_HI			40

+#define EF_CP0_BADVADDR		41

+#define EF_CP0_CAUSE		42

+#define EF_CP0_EPC		43

+#endif

 #define EF_SIZE			180