Restore the full include/grantlee stub tree

include/grantlee/context.h (the only grantlee header referenced by kept
code) includes its sibling stubs (abstractlocalizer.h, ...); the
file-level include/ prune left those siblings behind, breaking
codegen_grantlee compilation (fatal error: abstractlocalizer.h). The
grantlee engine stubs are a self-contained header set — keep the whole
dir, same treatment as include/GeographicLib.

qt6-after/qt6-migrated-legatus/include/grantlee/grantlee_textdocument_export.h

@@ -0,0 +1,42 @@
+
+#ifndef GRANTLEE_TEXTDOCUMENT_EXPORT_H
+#define GRANTLEE_TEXTDOCUMENT_EXPORT_H
+
+#ifdef GRANTLEE_TEXTDOCUMENT_STATIC_DEFINE
+#  define GRANTLEE_TEXTDOCUMENT_EXPORT
+#  define GRANTLEE_TEXTDOCUMENT_NO_EXPORT
+#else
+#  ifndef GRANTLEE_TEXTDOCUMENT_EXPORT
+#    ifdef Grantlee_TextDocument_EXPORTS
+        /* We are building this library */
+#      define GRANTLEE_TEXTDOCUMENT_EXPORT __attribute__((visibility("default")))
+#    else
+        /* We are using this library */
+#      define GRANTLEE_TEXTDOCUMENT_EXPORT __attribute__((visibility("default")))
+#    endif
+#  endif
+
+#  ifndef GRANTLEE_TEXTDOCUMENT_NO_EXPORT
+#    define GRANTLEE_TEXTDOCUMENT_NO_EXPORT __attribute__((visibility("hidden")))
+#  endif
+#endif
+
+#ifndef GRANTLEE_TEXTDOCUMENT_DEPRECATED
+#  define GRANTLEE_TEXTDOCUMENT_DEPRECATED __attribute__ ((__deprecated__))
+#endif
+
+#ifndef GRANTLEE_TEXTDOCUMENT_DEPRECATED_EXPORT
+#  define GRANTLEE_TEXTDOCUMENT_DEPRECATED_EXPORT GRANTLEE_TEXTDOCUMENT_EXPORT GRANTLEE_TEXTDOCUMENT_DEPRECATED
+#endif
+
+#ifndef GRANTLEE_TEXTDOCUMENT_DEPRECATED_NO_EXPORT
+#  define GRANTLEE_TEXTDOCUMENT_DEPRECATED_NO_EXPORT GRANTLEE_TEXTDOCUMENT_NO_EXPORT GRANTLEE_TEXTDOCUMENT_DEPRECATED
+#endif
+
+#if 0 /* DEFINE_NO_DEPRECATED */
+#  ifndef GRANTLEE_TEXTDOCUMENT_NO_DEPRECATED
+#    define GRANTLEE_TEXTDOCUMENT_NO_DEPRECATED
+#  endif
+#endif
+
+#endif /* GRANTLEE_TEXTDOCUMENT_EXPORT_H */