Pygccxml

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1. Fix multiple calls to __hash__() (70)

2. Static and extern qualifiers are now no more treated as equivalents
in the type_qualifiers class (for CastXML).
The old behaviour is kept for GCC-XML (static == extern).

3. Fix for declarations.is_noncopyable when used on a pointer_t.

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1. Include paths read from configuration files on windows are now normed
and passed between quotation marks. This makes pygccxml more robust
when used on Windows (with paths containing whitespaces).

2. Closed cache file handle, which would not be closed in case of an exception
(warning thrown by Python 2.7.13)

3. Always call wait() on subprocesses before closing stdout/stderr streams.
Detected by Python 3.6. Fixes the following warning:
ResourceWarning: subprocess xxxxx is still running

4. Fix deprecation warnings thrown by ConfigParser when using pygccxml
with python 2.7.13. Fix the usage of pygccxml with python 3.6.

5. Updated travis setup to python 3.6 for OS X.

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1. Single-source the version number to prevent version numbers mismatches.

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1. xml_generator_configuration_t will no more try to find
castxml or gccxml. You can use utils.find_xml_generator to help you
finding the path to the xml generator, or set it manually.
It is now mandatory to pass a valid xml_generator and
xml_generator_path to the configuration (65).

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1. Added is_struct function to declarations package. It returns true if
a declaration is a struct.

2. Removed * from decl_string when type is a function pointer (61)

3. Update travis.yml for newer OS X images. Update CastXML binaries for Travis.

4. Fix regression in directory_cache, which was crashing due an unset variable.
Add support for python3 in directory_cache.

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1. CastXML is now the default XML generator (instead of GCCXML)
find_xml_generator will now look for CastXML first too.

2. Do not allow to use the GCCXML provided by newer gccxml debian packages.
It is a wrapper around CastXML which can confuse pygccxml.
You should use the castxml package and the CastXML binary instead.
If you really want to use gccxml, the gccxml.real binary from the
gccxml debian package can still be used.

3. Fix parsing of boost/locale.hpp code.
Templated class instantiations with specializations are now better supported,
specifically when containing parentheses:
myClass<std::vector<char>(const std::string &, const std::string &)> obj;

4. When using the remove_pointer function on a function pointer, the
remove_pointer function now correctly returns a calldef_type_t.

5. declarations.is_string, declarations.is_std_wstring,
declarations.is_std_ostream and declarations.is_std_wostream now
correctly work when a the type is also a reference.
Example: declarations.is_string returned false for
typedef std::string& x3;; it will return true now.

6. General code style overhaul (with the help of quantifiedcode.com)

7. Added a bunch of new examples and documentation update and cleanup

8. [Removals] Remove compiler attribute in declarations.py and
gccxml_path from config.py
These were deprecated in pygccxml v1.7.0, and definitively removed for v1.8.0

9. [Deprecations]
* The binary_parsers module was deprecated. It seems that this module is not
used by other third-party projects, at least a quick search on GitHub
did not give any interesting usage. Also, this code is not tested, and
there seem to be some undefined variables, so it is highly probable that this
module is not working anyway.
I do not want to put much efforts in maintaining this module, but concentrate
on improving pygccxml's core features. If somebody wants to revive this
module it can still be done in a separate project.
Thus, the 3 following functions are now deprecated and will be removed in
pygccxml 1.9.0: merge_information, undecorate_blob and format_decl.
The undname_creator_t class is also deprecated for the same reason.

* A bunch of attributes and methods were deprecated.
They will throw a warning when used with pygccxml 1.8.0, and will be removed
in version 1.9.0.
* In class_declaration_t and class_t:
- decl.container_traits attribute => declarations.find_container_traits(decl)
* In class_t
- decl.find_noncopyable_vars() method => declarations.find_noncopyable_vars(decl)
- decl.find_copy_constructor() method => declarations.find_copy_constructor(decl)
- decl.has_vtable argument => declarations.has_vtable(decl)
* In constructor_t
- ctor.is_copy_constructor attribute => declarations.is_copy_constructor(ctor)
- ctor.is_trivial_constructor attribute => declarations.is_trivial_constructor(ctor)

* Deprecate the ns() method. The namespace() method can be used instead.

* Deprecate etree_scanner_t and etree_saxifier_t classes.
The most efficient xml scanner class is the ietree_scanner_t class, which
is the one used since many years now.

* The [gccxml] section used in the configuration file is now deprecated.
Please use [xml_generator] instead.

* native_compiler and enum classes from the utils module. These were
not used in pygccxml, and can easily be implemented in your own project if you
need and equivalent