Remove -Wredundant-decls
Some Python headers contain redundant redeclarations.
diff --git a/configure.ac b/configure.ac
index 3b3c903..b8c4bc7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -590,7 +590,7 @@
fi
# warnings we'd like to see
- EXTRA_CFLAGS="${EXTRA_CFLAGS} -pedantic -Wall -Wextra -Wshadow -Wpointer-arith -Wcast-align -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -Winline -Wredundant-decls"
+ EXTRA_CFLAGS="${EXTRA_CFLAGS} -pedantic -Wall -Wextra -Wshadow -Wpointer-arith -Wcast-align -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -Winline"
# warnings we'd like to suppress
EXTRA_CFLAGS="${EXTRA_CFLAGS} -Wno-long-long -Wno-format-extra-args"
case "${host}" in
