Bug 728654 - configuration stops with settings.h missing

This bug fix fixes, in a general way, a number of issues encountered on Solaris
- configure
  - ! (exclamation mark) not recognized properly, but with mkdir -p no test is necessary
  - sed problem regarding removing last , (comma) in language list. Is automatically replaced in with a space when translating language names to upper case.
- lang_cfg.py
  - corrected check on number of arguments

Bug 623299 - Fortran: quotation after define causes error

For the determination whether the file is free or fixed formatted code just see lines starting with # as comment lines

Made INSTALL file version and date independent

Bug 172072 - $title doesn't work in LateX header

Corrected copyright year

In case $title is used in the latex header or footer it is now replaced with the empty string (it was left inside, resulting in non translatable LaTeX code), the documentation has been updated too.

See also:
Bug 668004 - LATEX_HEADER should share common information with HTML_HEADER
Bug 401327 - LATEX_HEADER: $title does not get expanded

Consistency of usage of the word LaTeX in the documentation

Fix segfault on invalid bounding FIG when patching dot

Inconsistency in usage of simplesecr versus simplesectsep corrected

The word LaTeX was used as just the word and on other places as \f$\mbox{\LaTeX}\f$
This has been made more consistent by means of the definition of the Alia \LaTeX (similar for \TeX)
Some names of executables etc. were not set in a 'code' font.

Conflicts:
	src/doctokenizer.l

Fix id parsing for atx markdown headers

Merge branch 'feature/bug_678436' of https://github.com/albert-github/doxygen into albert-github-feature/bug_678436