[Docs][JIT] Update the clang++ invocation lines in the kaleidoscope docs.

The old examples had missing/incorrect flags that were causing failures on newer
versions of clang and the tutorial code.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221419 91177308-0d34-0410-b5e6-96231b3b80d8

Author: lhames

docs/tutorial/LangImpl3.rst

@@ -581,7 +581,7 @@ our makefile/command line about which options to use:
 .. code-block:: bash
 
     # Compile
-    clang++ -g -O3 toy.cpp `llvm-config --cppflags --ldflags --libs core` -o toy
+    clang++ -g -O3 toy.cpp `llvm-config --cxxflags --ldflags --system-libs --libs core` -o toy
     # Run
     ./toy
 

docs/tutorial/LangImpl4.rst

@@ -428,7 +428,7 @@ the LLVM JIT and optimizer. To build this example, use:
 .. code-block:: bash
 
     # Compile
-    clang++ -g toy.cpp `llvm-config --cppflags --ldflags --libs core jit native` -O3 -o toy
+    clang++ -g toy.cpp `llvm-config --cxxflags --ldflags --system-libs --libs core jit native` -O3 -o toy
     # Run
     ./toy
 

docs/tutorial/LangImpl5.rst

@@ -736,7 +736,7 @@ the if/then/else and for expressions.. To build this example, use:
 .. code-block:: bash
 
     # Compile
-    clang++ -g toy.cpp `llvm-config --cppflags --ldflags --libs core jit native` -O3 -o toy
+    clang++ -g toy.cpp `llvm-config --cxxflags --ldflags --system-libs --libs core jit native` -O3 -o toy
     # Run
     ./toy
 

docs/tutorial/LangImpl6.rst

@@ -729,7 +729,7 @@ the if/then/else and for expressions.. To build this example, use:
 .. code-block:: bash
 
     # Compile
-    clang++ -g toy.cpp `llvm-config --cppflags --ldflags --libs core jit native` -O3 -o toy
+    clang++ -g toy.cpp `llvm-config --cxxflags --ldflags --system-libs --libs core jit native` -O3 -o toy
     # Run
     ./toy
 

docs/tutorial/LangImpl7.rst

@@ -847,7 +847,7 @@ mutable variables and var/in support. To build this example, use:
 .. code-block:: bash
 
     # Compile
-    clang++ -g toy.cpp `llvm-config --cppflags --ldflags --libs core jit native` -O3 -o toy
+    clang++ -g toy.cpp `llvm-config --cxxflags --ldflags --system-libs --libs core jit native` -O3 -o toy
     # Run
     ./toy