* gdb.stabs: Re-write weird.def and configuration to use sed

instead of cpp.  sed is portable and POSIX; cpp is neither.

gdb/testsuite/gdb.stabs/.Sanitize

@@ -26,9 +26,9 @@ alpha.mt
 aout.mt
 configure.in
 ecoff.mt
-weird-aout.sed
-weird-ecoff.sed
-weird-xcoff.sed
+aout.sed
+ecoff.sed
+xcoff.sed
 weird.def
 weird.exp
 xcoff.mt

gdb/testsuite/gdb.stabs/alpha.mt

@@ -1,7 +1,7 @@
 # This configuration is for a gcc that uses mips-tfile. If your gcc
 # uses gas, you should configure gdb --with-gnu-as.
 #
-weird.o: $(srcdir)/weird.def $(srcdir)/weird-ecoff.sed
+weird.o: $(srcdir)/weird.def $(srcdir)/ecoff.sed
 	sed -e '/.if notalpha/,/.endif notalpha/d' <$(srcdir)/weird.def | \
-	sed -f $(srcdir)/weird-ecoff.sed >weird.s
+	sed -f $(srcdir)/ecoff.sed >weird.s
 	$(CC) -c weird.s

gdb/testsuite/gdb.stabs/aout.mt

@@ -1,3 +1,3 @@
-weird.o: $(srcdir)/weird.def $(srcdir)/weird-aout.sed
-	sed -f $(srcdir)/weird-aout.sed <$(srcdir)/weird.def >weird.s
+weird.o: $(srcdir)/weird.def $(srcdir)/aout.sed
+	sed -f $(srcdir)/aout.sed <$(srcdir)/weird.def >weird.s
 	$(CC) -c weird.s

gdb/testsuite/gdb.stabs/ecoff.mt

@@ -1,7 +1,7 @@
 # This configuration is for a gcc that uses mips-tfile. If your gcc
 # uses gas, you should configure gdb --with-gnu-as.
 #
-weird.o: $(srcdir)/weird.def $(srcdir)/weird-ecoff.sed
+weird.o: $(srcdir)/weird.def $(srcdir)/ecoff.sed
 	sed -e '/.long/.word/' <$(srcdir)/weird.def | \
-	sed -f $(srcdir)/weird-ecoff.sed >weird.s
+	sed -f $(srcdir)/ecoff.sed >weird.s
 	$(CC) -c weird.s

gdb/testsuite/gdb.stabs/xcoff.mt

@@ -1,3 +1,3 @@
-weird.o: $(srcdir)/weird.def $(srcdir)/weird-xcoff.sed
-	sed -f $(srcdir)/weird-xcoff.sed <$(srcdir)/weird.def >weird.s
+weird.o: $(srcdir)/weird.def $(srcdir)/xcoff.sed
+	sed -f $(srcdir)/xcoff.sed <$(srcdir)/weird.def >weird.s
 	$(CC) -c weird.s