Release 0.4.0

 Protect macros from user code to the left of them

remove time from raw logging

for `&CheckStackAddress`, VisualStudio emits address of a trampoline like PLT, 
not the actual address of `CheckStackTrace`.

We need address of `CheckStackTrace` to guess the address range of the function.
`static` function seems to return the actual address of the function.

Fixes #421 

Stop using auto_ptr

std::unique_ptr requires -std=c++11. just use raw pointer.

project/google/glog -> project/google-admin/glog

windows/glog/logging.h is expected to be generated by
src/windows/preprocess.sh and should not be modified directly.

Use push/pop macro when supressing warning

* Same as PR #397 , but for the `.in` file. Useful for some unusual cross-platform build environments (e.g. WSL).

Support ABI tags after <local-source-name> in demangle.cc.
Update the reference URL.

Fixes #50 

* Fix demangling template parameter packs

Clang 4.0.1-10 and gcc 7.3.0 both mangle the function "void add<int>(int)" as
"_Z3addIJiEEvDpT_".  The template parameter pack is of the form
J <template-arg>* E

The opening character for a param pack could be either I or J, as libiberty
follows [1].  This change simply adds the J case.

[1] https://github.com/gcc-mirror/gcc/blob/fbd263526ad105a953fd51d9f7bca2c3f268cf82/libiberty/cp-demangle.c#L3209

build: cleanup temps and remove NEWS

The code references `@ac_cv_have_libgflags@` but not `@ac_cv_have_libgflags_h@`. This corrects that.

`int(with_gflags)` incorporates the possibility of `True/False`: https://github.com/bazelbuild/bazel/issues/4792

Fix unused variable warning in GCC

With automake GNU standard relaxed, these are no longer needed.

automake: relax GNU standard directory style

Now, we can build.

GNU standard assumes `README` under root dir, while PR #403
didn't fix the building issue exactually.
https://www.gnu.org/software/automake/manual/html_node/List-of-Automake-options.html

update README.md filename in Makefile.am

ci: add clang-cxx17 toolchain

remove register keyword from unittest

Use push/pop macro when supressing warning

ci: add appveyor and travis config

* Previous implementation did not correctly restore the warning state if initially disabled.

* Upstream Chromium local changes to symbolize.cc

Chromium has its own fork of symbolize.cc and symbolize.h, and it has
several not-yet-upstreamed changes, that are not specific to Chromium.

This patch upstreams such a changes.

  Fixed google::FindSymbol reading past end of a section
  https://chromium.googlesource.com/chromium/src/+/3dae0a2d7da309159a301e40a592692ec8431a38

  Fix -INT_MIN integer overflow in itoa_r().
  https://chromium.googlesource.com/chromium/src/+/ac4d28e9cb934e01ff16a9e67a5f387caa82719f

  Add print_unsymbolized_stack_traces gn arg.
  https://chromium.googlesource.com/chromium/src/+/6a2726776f59cdcf0090f584a15db4a1ab8c40d7

  Switch to standard integer types in base/.
  https://chromium.googlesource.com/chromium/src/+/9b6f42934e5a1e65ebfc668d91a28a6e2678a14c

* Add a build option to print unsymbolized traces

This PRINT_UNSYMBOLIZED_STACK_TRACES option to cmake, and
--enable-unsymbolized-traces option to autoconf.

The newly-released gflags 2.2.2 includes fixes to the Bazel BUILD files
that weren't in the older 2.2.1 release.