Big warnings cleanup for Solaris/GCC. Down to about 40 now, but

we'll get there one day.

Use `cat' to create aclocal.m4, not `aclocal'. Some people don't
have automake installed.

Only run the autoconf rule in the top-level GNUmakefile if the
invoker specified `make configure', don't run it automatically
because of CVS timestamp skew.

src/backend/commands/sequence.c

@@ -398,8 +398,8 @@ get_seq_name(text *seqin)
 		 */
 		for (; *rawname; rawname++)
 		{
-			if (isascii((unsigned char) *rawname) &&
-				isupper(*rawname))
+			if (isascii((int) *rawname) &&
+				isupper((int) *rawname))
 				*rawname = tolower(*rawname);
 		}
 	}