Issue #1496032.  Add -mieee to BASECFLAGS on alpha, when gcc is
the compiler.  This should(?) help to fix failures in test_math
and test_cmath on Linux/alpha.

Also add configure message reporting the result of uname -m, as
a debugging aid.
diff --git a/Misc/NEWS b/Misc/NEWS
index 5c7b2ae..c616ba2 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -126,6 +126,8 @@
 Build
 -----
 
+- Issue #1496032: On alpha, use -mieee when gcc is the compiler.
+
 - Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
   gcc is used as compiler.