Add support for le64.

Summary:
le64 is a generic little-endian 64-bit processor, mimicking le32.

Also see the associated LLVM change.

Test Plan: make check-all

Reviewers: dschuff

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D5318

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@217694 91177308-0d34-0410-b5e6-96231b3b80d8
Fix copy/paste for test, the triple should be le64-unknown-unknown

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@217695 91177308-0d34-0410-b5e6-96231b3b80d8
No need to use PNaCl's calling convention since PNaCl now uses a separate approach for calling conventions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@217696 91177308-0d34-0410-b5e6-96231b3b80d8
clang-cl: Don't treat linker input files differently when /TP or /TC is specified.

Summary: This fixes http://llvm.org/PR20923.

Test Plan: This patch includes an automated test.

Reviewers: hansw

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D5334

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@217699 91177308-0d34-0410-b5e6-96231b3b80d8
patch to add missing warning on sizeof wrong parameter
for __builtin___strlcpy_chk/__builtin___strlcat_chk.
Patch by Jacques Fortier with monir change by me and
addition of test. rdar://18259539


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@217700 91177308-0d34-0410-b5e6-96231b3b80d8