dtksh: HACKY fix for compilation on later linux C library where FILE definition has moved

cde/programs/dtksh/ksh93/src/cmd/ksh93/sh/init.c

@@ -108,6 +108,12 @@
 #include	"national.h"
 
 #if _hdr_wchar && _lib_wctype && _lib_iswctype
+/* on linux wchar.h can include FILE without stdio.h which clashes with sfio_t */
+#if defined(linux)
+ #ifndef __FILE_defined
+  #define __FILE_defined 1
+ #endif
+#endif
 #   include <wchar.h>
 #   undef  isalpha
 #   define isalpha(x)      iswalpha(x)

cde/programs/dtksh/ksh93/src/cmd/ksh93/sh/macro.c

@@ -94,6 +94,12 @@
 #endif
 #include	"defs.h"
 #include	<fcin.h>
+/* on linux pwd.h can include FILE without stdio.h which clashes with sfio_t */
+#if defined(linux)
+ #ifndef __FILE_defined
+  #define __FILE_defined 1
+ #endif
+#endif
 #include	<pwd.h>
 #include	"name.h"
 #include	"variables.h"