Change recommended name of checkout directory for Foundation and XCTest

Author: parkera

README.md

@@ -73,8 +73,8 @@ compiler for C++14 support and create a symlink:
      git clone [email protected]:/apple/swift-cmark.git cmark
      git clone [email protected]:/apple/swift-llbuild.git llbuild
      git clone [email protected]:/apple/swift-package-manager.git swiftpm
-     git clone [email protected]:/apple/swift-corelibs-xctest.git XCTest
-     git clone [email protected]:/apple/swift-corelibs-foundation.git Foundation
+     git clone [email protected]:/apple/swift-corelibs-xctest.git 
+     git clone [email protected]:/apple/swift-corelibs-foundation.git 
 
 
 [CMake](http://cmake.org) is the core infrastructure used to configure builds of

utils/build-script-impl

@@ -829,8 +829,8 @@ CMARK_SOURCE_DIR="$WORKSPACE/cmark"
 LLDB_SOURCE_DIR="$WORKSPACE/lldb"
 LLBUILD_SOURCE_DIR="$WORKSPACE/llbuild"
 SWIFTPM_SOURCE_DIR="$WORKSPACE/swiftpm"
-XCTEST_SOURCE_DIR="$WORKSPACE/XCTest"
-FOUNDATION_SOURCE_DIR="$WORKSPACE/Foundation"
+XCTEST_SOURCE_DIR="$WORKSPACE/swift-corelibs-xctest"
+FOUNDATION_SOURCE_DIR="$WORKSPACE/swift-corelibs-foundation"
 
 if [[ ! -d $CMARK_SOURCE_DIR ]]; then
   echo "$CMARK_SOURCE_DIR not found. Attempting to clone ..."