Add the definition of "floatget".

Necessary to compile 5.0.10 on Windows, no bug report filed.


include/config-win.h:
  Add the definition of "floatget" (as taken from "include/my_config.h", matching the common "floatstore").
  Necessary to compile 5.0.10 on Windows, no bug report filed.

include/config-win.h

@@ -285,6 +285,7 @@ inline double ulonglong2double(ulonglong value)
 			   *(((long *) T)+1) = *(((long*) &V)+1); }
 #define float4get(V,M) { *((long *) &(V)) = *((long*) (M)); }
 #define floatstore(T,V) memcpy((byte*)(T), (byte*)(&V), sizeof(float))
+#define floatget(V,M)   memcpy((byte*)(&V), (byte*)(M), sizeof(float))
 #define float8get(V,M) doubleget((V),(M))
 #define float4store(V,M) memcpy((byte*) V,(byte*) (&M),sizeof(float))
 #define float8store(V,M) doublestore((V),(M))