include/ctype.h: drop is*_l macro definitions

ctype locale-specific macro definitions are broken because they result
in dereference of pointer to structure of incomplete type.
Drop these macros since they are optional and let applications use
functions with the same names.

This change fixes parted-3.3 build with uClibc-ng:
  http://autobuild.buildroot.net/results/b7ba1210d5aa184b133f0171da621d2b0083ec39/build-end.log

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

include/ctype.h

@@ -350,46 +350,13 @@ libc_hidden_proto(tolower_l)
 /* Return the uppercase version of C.  */
 extern int toupper_l (int __c, __locale_t __l) __THROW;
 
-# if __GNUC__ >= 2 && defined __OPTIMIZE__ && !defined __cplusplus
-#  define tolower_l(c, locale) __tobody(c, tolower_l, (locale)->__ctype_tolower, (c, locale))
-#  define toupper_l(c, locale) __tobody(c, toupper_l, (locale)->__ctype_toupper, (c, locale))
-# endif	/* Optimizing gcc */
-
-
-# define __isctype_l(c, type, locale) ((locale)->__ctype_b[(int) (c)] & (__ctype_mask_t) type)
 # ifndef __NO_CTYPE
-#  define __isalnum_l(c,l)	__isctype_l((c), _ISalnum, (l))
-#  define __isalpha_l(c,l)	__isctype_l((c), _ISalpha, (l))
-#  define __iscntrl_l(c,l)	__isctype_l((c), _IScntrl, (l))
-#  define __isdigit_l(c,l)	__isctype_l((c), _ISdigit, (l))
-#  define __islower_l(c,l)	__isctype_l((c), _ISlower, (l))
-#  define __isgraph_l(c,l)	__isctype_l((c), _ISgraph, (l))
-#  define __isprint_l(c,l)	__isctype_l((c), _ISprint, (l))
-#  define __ispunct_l(c,l)	__isctype_l((c), _ISpunct, (l))
-#  define __isspace_l(c,l)	__isctype_l((c), _ISspace, (l))
-#  define __isupper_l(c,l)	__isctype_l((c), _ISupper, (l))
-#  define __isxdigit_l(c,l)	__isctype_l((c), _ISxdigit, (l))
-#  define __isblank_l(c,l)	__isctype_l((c), _ISblank, (l))
-
 #  if (defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN) \
 	&& defined __UCLIBC_SUSV4_LEGACY__
 #   define __isascii_l(c,l)	((l), __isascii (c))
 #   define __toascii_l(c,l)	((l), __toascii (c))
 #  endif
 
-#  define isalnum_l(c,l)	__isalnum_l ((c), (l))
-#  define isalpha_l(c,l)	__isalpha_l ((c), (l))
-#  define iscntrl_l(c,l)	__iscntrl_l ((c), (l))
-#  define isdigit_l(c,l)	__isdigit_l ((c), (l))
-#  define islower_l(c,l)	__islower_l ((c), (l))
-#  define isgraph_l(c,l)	__isgraph_l ((c), (l))
-#  define isprint_l(c,l)	__isprint_l ((c), (l))
-#  define ispunct_l(c,l)	__ispunct_l ((c), (l))
-#  define isspace_l(c,l)	__isspace_l ((c), (l))
-#  define isupper_l(c,l)	__isupper_l ((c), (l))
-#  define isxdigit_l(c,l)	__isxdigit_l ((c), (l))
-#  define isblank_l(c,l)	__isblank_l ((c), (l))
-
 #  if (defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN) \
 	&& defined __UCLIBC_SUSV4_LEGACY__
 #   define isascii_l(c,l)	__isascii_l ((c), (l))