ARM updates

Due to the ABI we are using we have to use the earm architecture
moniker for the build system to behave correctly. This involves
then some headers to move around.

There is also a few related Makefile updates as well as minor
source code corrections.

lib/libc/softfloat/softfloat-specialize

@@ -80,7 +80,11 @@ void float_raise( fp_except flags )
 	    info.si_code = FPE_FLTINV;
 	else if (flags & float_flag_inexact)
 	    info.si_code = FPE_FLTRES;
+#if !defined(__minix)
+/* LSC FIXME: This kind of remove any interest to the function. We should
+               be using the minix equivalent, or do something appropriate. */
 	sigqueueinfo(getpid(), &info);
+#endif /* !defined(__minix) */
     }
 }
 #undef float_exception_mask