Add support for Borland extensions via option -fborland-extensions
(original patch r112791 was reverted due to a bug).

llvm-svn: 112915
diff --git a/clang/docs/tools/clang.pod b/clang/docs/tools/clang.pod
index bcf84b7..032efcf 100644
--- a/clang/docs/tools/clang.pod
+++ b/clang/docs/tools/clang.pod
@@ -168,6 +168,10 @@
 
 Enable support for Microsoft extensions.
 
+=item B<-fborland-extensions>
+
+Enable support for Borland extensions.
+
 =item B<-fwritable-strings>
 
 Make all string literals default to writable.  This disables uniquing of