contribs: fixed libcdio linking on Mac OS X 10.6 and later

extras/contrib/src/Patches/libcddb-darwin.patch

+--- include/cddb/cddb_ni.h.orig	2009-10-25 21:58:20.000000000 +0100
++++ include/cddb/cddb_ni.h	2009-10-25 21:58:46.000000000 +0100
+@@ -35,6 +35,7 @@
+ #  include <iconv.h>
+ #else
+    typedef void *iconv_t;       /* for code uniformity */
++   #define ICONV_CONST const
+ #endif
+ 
+ #ifdef HAVE_WINDOWS_H

extras/contrib/src/contrib-src.mak

@@ -1536,6 +1536,9 @@ ifneq ($(HOST),$(BUILD))
 endif
 ifdef HAVE_WIN32
 	(cd $@; patch -p0 < ../Patches/libcddb-win32.patch )
+endif
+ifdef HAVE_DARWIN_OS
+	(cd $@; patch -p0 < ../Patches/libcddb-darwin.patch )
 endif
 	patch -p0 < Patches/libcddb-getenv-crash.patch
 
@@ -1543,8 +1546,13 @@ ifdef HAVE_WIN32
 .cddb: libcddb .regex
 	(cd $<; $(HOSTCC) ./configure $(HOSTCONF) --prefix=$(PREFIX) --disable-shared --enable-static --without-iconv CFLAGS="$(CFLAGS) -D_BSD_SOCKLEN_T_=int" && make && make install)
 else
+ifdef HAVE_DARWIN_OS
+.cddb: libcddb
+	(cd $<; $(HOSTCC) ./configure $(HOSTCONF) --prefix=$(PREFIX) --disable-shared --enable-static --without-iconv CFLAGS="$(CFLAGS) -D_BSD_SOCKLEN_T_=int" LDFLAGS="$(LDFLAGS)" && make && make install)
+else
 .cddb: libcddb
 	(cd $<; $(HOSTCC) ./configure $(HOSTCONF) --prefix=$(PREFIX) --disable-shared --enable-static CFLAGS="$(CFLAGS) -D_BSD_SOCKLEN_T_=int" LDFLAGS="$(LDFLAGS) -liconv" && make && make install)
+endif
 endif
 	touch $@