Fixed line continuation error in CMakeLists.txt. Updated REPL warning for compiler and stdlib development use recommendations

Author: erica

benchmark/CMakeLists.txt

@@ -137,8 +137,7 @@ runcmd(COMMAND "xcrun" "-toolchain" "${SWIFT_DARWIN_XCRUN_TOOLCHAIN}" "-f" "clan
 # You have to delete CMakeCache.txt in the swift build to force a
 # reconfiguration.
 set(SWIFT_EXTRA_BENCH_CONFIGS CACHE STRING
-    "A semicolon separated list of benchmark configurations. \
-Available configurations: <Optlevel>_SINGLEFILE, <Optlevel>_MULTITHREADED")
+    "A semicolon separated list of benchmark configurations. Available configurations: <Optlevel>_SINGLEFILE, <Optlevel>_MULTITHREADED")
 
 # Syntax for an optset:  <optimization-level>_<configuration>
 #    where "_<configuration>" is optional.

lib/Immediate/REPL.cpp

@@ -984,7 +984,8 @@ class REPLEnvironment {
     if (llvm::sys::Process::StandardInIsUserInput())
       llvm::outs() <<
           "***  You are running Swift's integrated REPL,  ***\n"
-          "***  intended for testing purposes only.       ***\n"
+          "***  intended for compiler and stdlib          ***\n"
+          "***  development and testing purposes only.    ***\n"
           "***  The full REPL is built as part of LLDB.   ***\n"
           "***  Type ':help' for assistance.              ***\n";
   }