r190980 - Make Preprocessor::Lex non-recursive.

[Joerg Sonnenberger]

On Thu, Sep 19, 2013 at 12:41:32AM -0000, Eli Friedman wrote:
> Author: efriedma
> Date: Wed Sep 18 19:41:32 2013
> New Revision: 190980
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=190980&view=rev
> Log:
> Make Preprocessor::Lex non-recursive.

This is eating a newline in assembler sources. Can you investigate,
please? Test case:

#define __CHECK_FPU
#define RESTORE_FPU __CHECK_FPU stx %l2, [0]
restore % 0,, %o0
RESTORE_FPU

Before, restore and stx are on separate as expected. After this change,
they end up on the same line.

Joerg