[libclang] Introduce clang_getFileLocation.

Uses of clang_getSpellingLocation should eventually move to calling
clang_getFileLocation, and clang_getSpellingLocation should do what
its name represents and actually point at the 'spelling' location, e.g.
inside a macro definition if the spelling of a token came from that.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171486 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/libclang/libclang.exports b/tools/libclang/libclang.exports
index 68bfb71..8f3c863 100644
--- a/tools/libclang/libclang.exports
+++ b/tools/libclang/libclang.exports
@@ -163,6 +163,7 @@
 clang_getFieldDeclBitWidth
 clang_getExpansionLocation
 clang_getFile
+clang_getFileLocation
 clang_getFileName
 clang_getFileTime
 clang_getFunctionTypeCallingConv