[packages] netatalk: remove some redundant CFLAG overrides, use autoreconf to ensure a consistent configure outcome, patch broken shipped iconv.m4

git-svn-id: svn://svn.openwrt.org/openwrt/packages@28482 3c298f89-4303-0410-b956-a3cf2f4a3e73

net/netatalk/patches/001-automake-compat.patch

@@ -0,0 +1,9 @@
+--- a/macros/iconv.m4
++++ b/macros/iconv.m4
+@@ -114,6 +114,5 @@ int main() {
+ 
+         CFLAGS="$savedcflags"
+         LDFLAGS="$savedldflags"
+-	CPPFLAGS="$saved_CPPFLAGS"
+ 	
+ ])