Previously most messages included a newline in the string, but a few of
them were missing. Fix these and simplify by just adding the newline in
the _LIBUNWIND_LOG macro itself.
While here correct 'libuwind' typo (missing 'n').
Upstream LLVM libunwind commits r280086 and r280103.
For historical reasons Darwin/i386 has ebp and esp swapped in the
eh_frame register numbering. That is:
Darwin Other
Reg # eh_frame eh_frame DWARF
===== ======== ======== =====
4 ebp esp esp
5 esp ebp ebp
Although the UNW_X86_* constants are not supposed to be coupled to
DWARF / eh_frame numbering they are currently conflated in LLVM
libunwind, and thus we require the non-Darwin numbering.
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
The key improvement is that it may be built without cross-unwinding
support, which significantly reduces the stack space requirement.
MFC after: 1 week
Relnotes: yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D7123
