libedit: fix a compatibility issue that appeared in gdb 7.6

gdb76 has a patch for it, but this change will increase compatibility
with other readline users as well.

KEEP/libedit_readlineh.patch

@@ -1,6 +1,24 @@
-78,80c78
-< #if !defined(__sun) && !defined(__hpux) && !defined(_AIX)
-< #include <sys/ttydefaults.h>
-< #endif
----
-> /* sys/ttydefaults.h commented out in musl version */
+--- libedit-20121213-3.0/src/editline/readline.h
++++ libedit-20121213-3.0.patched/src/editline/readline.h
+@@ -75,9 +75,7 @@
+
+ #ifndef CTRL
+ #include <sys/ioctl.h>
+-#if !defined(__sun) && !defined(__hpux) && !defined(_AIX)
+-#include <sys/ttydefaults.h>
+-#endif
++/* sys/ttydefaults.h commented out in musl version */
+ #ifndef CTRL
+ #define CTRL(c)		((c) & 037)
+ #endif
+@@ -105,6 +103,10 @@
+ extern int		 rl_point, rl_end;
+ extern int		 history_base, history_length;
+ extern int		 max_input_history;
++/* compatibility fix: max_input_history was renamed to 
++   history_max_entries in readline 4.2, this is required
++   to build gdb 7.6 against libedit */
++#define history_max_entries max_input_history
+ extern char		*rl_basic_word_break_characters;
+ extern char		*rl_completer_word_break_characters;
+ extern char		*rl_completer_quote_characters;

pkg/libedit

@@ -9,7 +9,7 @@ sha512=06420df987429bdec6aea216046548cb7d1e1ed004e140c01692625dfb9149cc42ad98755
 termcap
 
 [build]
-patch -p0 src/editline/readline.h -i "$K/libedit_readlineh.patch" || exit 1
+patch -p1 < "$K"/libedit_readlineh.patch || exit 1
 
 CFLAGS="-D_GNU_SOURCE -D_BSD_SOURCE -D__STDC_ISO_10646__ $optcflags" \
   ./configure -C --prefix="$butch_prefix" --enable-widec || exit 1