[runtime] Use --strip-all rather than --strip-sections

We need to preserve section headers for shared libraries.

Differential Revision: https://reviews.llvm.org/D59184

llvm-svn: 355783

llvm/runtimes/llvm-strip-link.in

@@ -19,7 +19,7 @@ link_dir = os.path.join(install_dir, 'lib', 'debug', '.build-id')
 
 sys.exit(subprocess.call([
     llvm_objcopy,
-    '--strip-sections',
+    '--strip-all',
     '--build-id-link-dir=' + link_dir,
     '--build-id-link-input=.debug',
     '--build-id-link-output=',