Following the modification introduced in llvm by commit 185311

The build system is currently miss-identifying GNU/kFreeBSD as FreeBSD.
This kind of simplification is sometimes useful, but in general it's not correct. 

As GNU/kFreeBSD is an hybrid system, for kernel-related issues we want to match the
build definitions used for FreeBSD, whereas for userland-related issues we want to
match the definitions used for other systems with Glibc.

The current modification adjusts the build system so that they can be distinguished,
and explicitly adds GNU/kFreeBSD to the build checks in which it belongs.

Fixes bug #16446.

Patch by Robert Millan in the context of Debian.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@185313 91177308-0d34-0410-b5e6-96231b3b80d8
Formatting cleanup.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@185357 91177308-0d34-0410-b5e6-96231b3b80d8
Split symbol support for ELF and Linux.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@185366 91177308-0d34-0410-b5e6-96231b3b80d8
Recognize "decltype(nullptr)" as a valid DW_AT_name for DW_TAG_unspecified_type tags as meaning the C++11 null pointer type.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@185382 91177308-0d34-0410-b5e6-96231b3b80d8
Fixed Xcode project to include SymbolVendorELF.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@185386 91177308-0d34-0410-b5e6-96231b3b80d8
Added SymbolVendorELF to the wrong target (lldb-tool), now it is correctly added to lldb-core.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@185388 91177308-0d34-0410-b5e6-96231b3b80d8
Change the default timeout for KDP communications to be 5 seconds.
<rdar://problem/13793059> 



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@185400 91177308-0d34-0410-b5e6-96231b3b80d8
Use the "last created watchpoint" rather than asserting on watchpoint commands passing no watchpoint ID.

<rdar://problem/14327560> 


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@185406 91177308-0d34-0410-b5e6-96231b3b80d8