doc/Makefile.am: made portable
changelog.sh: \n separator removed

Fixes either #changelog entries (unless very 1st)
and entry length calculation (for underline)
changelog.sh: finishing touches

Added identification of the change log generator to the generated log
Fixed \n clensing (restricted to 1st character)
#changelog
Change log added to project documentation

changelog.sh now also generates project documentation worthy
version of the change log.
HTTP form is generated by asciidoc and linked from the index.
#changelog
C tlang: support for UT added