* gdb.stabs/ecoff.mt: Delete alpha specific if block, fix typo.

* gdb.stabs/ecoff.sed:  Escape inserted blanks with backslashes, embed
	.stabs directives in comments.

gdb/testsuite/gdb.stabs/ecoff.mt

@@ -2,6 +2,7 @@
 # uses gas, you should configure gdb --with-gnu-as.
 #
 weird.o: $(srcdir)/weird.def $(srcdir)/ecoff.sed
-	sed -e '/.long/.word/' <$(srcdir)/weird.def | \
+	sed -e '/.if alpha/,/.endif alpha/d' <$(srcdir)/weird.def | \
+	sed -e 's/.long/.word/' | \
 	sed -f $(srcdir)/ecoff.sed >weird.s
 	$(CC) -c weird.s