Upgrade rust/crates/clang-sys to 1.0.0

* Regenerate .bp file and out/*.rs files.
  * Change build features from clang_9_0 to clang_10_0.
* Reapply local changes in src/link.rs to include
  generated files in out/{common,dynamic}.rs

Test: make
Change-Id: I6d916789cce14bf34e93166fc58c5b10e848191c
diff --git a/docs.py b/docs.py
index e1d6d9c..554022a 100644
--- a/docs.py
+++ b/docs.py
@@ -5,7 +5,7 @@
 import subprocess
 
 TARGET = ".docs"
-VERSION = "clang_9_0"
+VERSION = "clang_10_0"
 
 if os.path.isdir(TARGET):
     shutil.rmtree(TARGET)