Merging r219989:

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r219989 | me | 2014-10-16 19:41:40 -0400 (Thu, 16 Oct 2014) | 2 lines

Added %itanium_abi_host_triple to fix debuginfo-tests when clang is a cross-compiler by default

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git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_35@221616 91177308-0d34-0410-b5e6-96231b3b80d8
Merging r220112:

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r220112 | me | 2014-10-17 19:50:47 -0400 (Fri, 17 Oct 2014) | 2 lines

Fix makefile for debuginfo-tests execution.

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git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_35@221617 91177308-0d34-0410-b5e6-96231b3b80d8
Merging r220148:

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r220148 | me | 2014-10-18 19:36:12 -0400 (Sat, 18 Oct 2014) | 6 lines

New round of fixes for "Always compile debuginfo-tests for the host triple"

clang tests were breaking, at least when compiling clang only, from an
installed llvm. Make the lit.cfg script deal with the case when we don't
have a host_triple available.

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git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_35@221618 91177308-0d34-0410-b5e6-96231b3b80d8