gcc: Add patch that fixes GCC building for MIPS.

Signed-off-by: Christian Beier <dontmind@freeshell.org>

devel/gcc/patches/003-mpfr-longlong-mips.patch

@@ -0,0 +1,38 @@
+diff -Naurd mpfr-2.4.2-a/mpfr-longlong.h mpfr-2.4.2-b/mpfr-longlong.h
+--- -a/mpfr-2.4.2/mpfr-longlong.h	2009-11-30 02:43:08.000000000 +0000
++++ -b/mpfr-2.4.2/mpfr-longlong.h	2009-12-18 12:04:29.000000000 +0000
+@@ -1011,7 +1011,15 @@
+ #endif /* __m88000__ */
+ 
+ #if defined (__mips) && W_TYPE_SIZE == 32
+-#if __GNUC__ > 2 || __GNUC_MINOR__ >= 7
++#if (__GNUC__ >= 5) || (__GNUC__ >= 4 && __GNUC_MINOR__ >= 4)
++#define umul_ppmm(w1, w0, u, v) \
++  do {									\
++    UDItype _r;							\
++    _r = (UDItype) u * v;						\
++    (w1) = _r >> 32;							\
++    (w0) = (USItype) _r;						\
++  } while (0)
++#elif __GNUC__ > 2 || __GNUC_MINOR__ >= 7
+ #define umul_ppmm(w1, w0, u, v) \
+   __asm__ ("multu %2,%3" : "=l" (w0), "=h" (w1) : "d" (u), "d" (v))
+ #else
+@@ -1024,7 +1032,16 @@
+ #endif /* __mips */
+ 
+ #if (defined (__mips) && __mips >= 3) && W_TYPE_SIZE == 64
+-#if __GNUC__ > 2 || __GNUC_MINOR__ >= 7
++#if (__GNUC__ >= 5) || (__GNUC__ >= 4 && __GNUC_MINOR__ >= 4)
++typedef unsigned int UTItype __attribute__ ((mode (TI)));
++#define umul_ppmm(w1, w0, u, v) \
++  do {									\
++    UTItype _r;							\
++    _r = (UTItype) u * v;						\
++    (w1) = _r >> 64;							\
++    (w0) = (UDItype) _r;						\
++  } while (0)
++#elif __GNUC__ > 2 || __GNUC_MINOR__ >= 7
+ #define umul_ppmm(w1, w0, u, v) \
+   __asm__ ("dmultu %2,%3" : "=l" (w0), "=h" (w1) : "d" (u), "d" (v))
+ #else