[libclang] Introduce clang_getPresumedLocation which works like clang_getExpansionLocation
but takes into account #line directives coming from preprocessed files.

Patch by Vinay Sajip!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139647 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/libclang/libclang.exports b/tools/libclang/libclang.exports
index 85e9f02..ea7aaf0 100644
--- a/tools/libclang/libclang.exports
+++ b/tools/libclang/libclang.exports
@@ -102,6 +102,7 @@
 clang_getOverloadedDecl
 clang_getOverriddenCursors
 clang_getPointeeType
+clang_getPresumedLocation
 clang_getRange
 clang_getRangeEnd
 clang_getRangeStart