[Clang] Reintroduce obsolete symbols in libclang.map (#149190)

This is a follow-up to #149079. Seems like we forgot about the fact that
the symbols also need to be in `libclang.map`.

(cherry picked from commit 7e0fde0)

Author: Sirraide

clang/tools/libclang/libclang.map

@@ -327,6 +327,8 @@ LLVM_13 {
     clang_getRange;
     clang_getRangeEnd;
     clang_getRangeStart;
+    clang_getRemappings;
+    clang_getRemappingsFromFileList;
     clang_getResultType;
     clang_getSkippedRanges;
     clang_getSpecializedCursorTemplate;
@@ -387,6 +389,9 @@ LLVM_13 {
     clang_parseTranslationUnit;
     clang_parseTranslationUnit2;
     clang_parseTranslationUnit2FullArgv;
+    clang_remap_dispose;
+    clang_remap_getFilenames;
+    clang_remap_getNumFiles;
     clang_reparseTranslationUnit;
     clang_saveTranslationUnit;
     clang_sortCodeCompletionResults;