Clang++ support, even in "Production" mode (for testing purposes).

llvm-svn: 100119

llvm-svn: 97311

llvm-svn: 97309

llvm-svn: 97308

 - Demonstrates how to build a standalone tool which loads source code using the
   Driver and Frontend libraries, and then uses CodeGen and the JIT to actually
   execute the code.

 - Still more complicated than it should be, but hey its only 153 lines. :)

--
ddunbar@ozzy:tmp$ cat hello.c
#include <stdio.h>
int main() { printf("hello world\n"); return 0; }
ddunbar@ozzy:tmp$ clang-interpreter hello.c
hello world
--

llvm-svn: 97133

llvm-svn: 94379

llvm-svn: 92780

llvm-svn: 91794

llvm-svn: 91176

Document that CompilerInvocation::createDiagnostics keeps a reference to the DiagnosticOptions, and update callers to make sure they don't pass in a temporary.

llvm-svn: 90704

llvm-svn: 90424

llvm-svn: 90379

llvm-svn: 90359

llvm-svn: 90197

llvm-svn: 89080

 - The build scriptage is about twice as long as the code, which is nice. :)

llvm-svn: 88826

Move tools/wpa to examples/wpa, and unbreak its build.

llvm-svn: 88825