Refactor tagmanager source files architecture

Split ctags and tagmanager sources, as follows:

tagmanager/ctags: the parsers, more or less upstream CTags;
tagmanager/mio: local MIO library copy;
tagmanager/src: actual tagmanager sources.
Update Waf build system
Update makefile.win32 build system
Merge branch 'master' into tm/tree-refactoring
Fix documentation using old directory tagmanager/include
Fix Windows build
Merge remote-tracking branch 'origin/master' into tm/tree-refactoring
Don't suppress warnings or define G_OS_WIN32 (Windows build)
Clean up a fuzzy string inside Turkish translation
Update of Brailian Portuguese translation
Updating NEWS for translations
Generate ChangeLog from Git log

The Makefile rule comes from https://live.gnome.org/Git/ChangeLog with
slight modifications.
Remove obsolete redundant dist-bzip2 build system target

Automake provides dist-bzip2 since at least version 1.8, so remove our
own target.  Moreover bzip2 distributions are a little obsolescent now
Xz is available and spread enough.
Remove broken 'deb' build system target

The 'deb' target was supposed to build a Debian package from the
sources but the 'debian/' subdirectory never existed.
Update copyright information
Add a few missing NEWS entries
Consistently use US wording
Fix translations build and installation in VPATH builds
Set release date
Post release version bump