Emit symbols in Swift remote mirror build presets

And don't include LLVM tests, since this preset doesn't
build LLVM.

rdar://problem/27616892

Author: bitjammer

utils/build-presets.ini

@@ -928,6 +928,7 @@ reconfigure
 compiler-vendor=apple
 swift-install-components=swift-remote-mirror
 install-destdir=%(install_destdir)s
+darwin-install-extract-symbols=1
 skip-build-cmark
 skip-build-llvm
 skip-build-llbuild
@@ -942,6 +943,7 @@ build-swift-dynamic-stdlib=0
 build-swift-static-sdk-overlay=0
 build-swift-dynamic-sdk-overlay=0
 swift-include-tests=0
+llvm-include-tests=0
 
 [preset: remote_mirror_ios_customization]