Introduce a new libclang API to determine the platform availability of
a given entity, so that we can tell when the entity was
introduced/deprecated/obsoleted on each platform for which we have an
annotation. Addresses <rdar://problem/11365715>.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156347 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/libclang/libclang.exports b/tools/libclang/libclang.exports
index d3b64db..594a796 100644
--- a/tools/libclang/libclang.exports
+++ b/tools/libclang/libclang.exports
@@ -43,6 +43,7 @@
 clang_disposeDiagnosticSet
 clang_disposeIndex
 clang_disposeOverriddenCursors
+clang_disposeCXPlatformAvailability
 clang_disposeString
 clang_disposeTokens
 clang_disposeTranslationUnit
@@ -85,6 +86,7 @@
 clang_getCursorLexicalParent
 clang_getCursorLinkage
 clang_getCursorLocation
+clang_getCursorPlatformAvailability
 clang_getCursorReferenceNameRange
 clang_getCursorReferenced
 clang_getCursorResultType