Do not define rintl, lrintl, or llrintl in libm/common for i386

These symbols have definitions in sources in machine/i386 and so should not
be defined in libm/common files. This is only a problem on unusual platforms
which do not use 80-bit long doubles (such as Native Client).

R=mcgrathr@chromium.org
BUG= https://code.google.com/p/nativeclient/issues/detail?id=3946

Review URL: https://codereview.chromium.org/774343002
4 files changed