Update doctokenizer.l

Removed ':' from the end of the section title for an RCS tag - it was inconsistent with sections created using other commands.
Fix id parsing for atx markdown headers

isAtxHeader() parses out the id and the title into the appropriate
variables.  The subsequent call to extractTitleId() would then have the
trimmed title (without the id ref) as input, and hence always set id to
be empty.
add space between br and / for better compatibility
Use \newline i.s.o. \par for linebreaks in LaTeX
Improve rendering of sub and superscripts in LaTeX
Added optional [block] option to \htmlonly
Fixed problem with ending a paragraph when htmlonly was at the end of a comment block
Changed "See Also" back to "See also"
Bug 678436 - Nested \if messes up list items

Blank spaces after an if statement have to be removed as well. Just enable them as part of the parameter of the conditional expression and remove them later on (to be safe not having them in the parser).
Bug 678436 - Nested \if messes up list items

Blank spaces after an if statement have to be removed as well. Also spaces before the firs round bracket have to be removed.
Merge branch 'feature/bug_678436' of https://github.com/albert-github/doxygen into albert-github-feature/bug_678436
Bug 728077 - [PATCH] Build fails when --with-libclang on Fedora
[PATCH] Fix broken links to subpages in LaTeX output
Merge pull request #141 from randomguy3/fix-id-extract

Fix id parsing for atx markdown headers
Merge branch 'patch-1' of https://github.com/rkawulak/doxygen into rkawulak-patch-1

Conflicts:
	src/doctokenizer.l
Merge branch 'master' of github.com:doxygen/doxygen
Bug 726219 - python3 import style causes doxygen to ignore some inheritances
Bug 726469 - Tilde sign in combination with <pre> and MARKDOWN_SUPPORT disabled
Meta tag in the HTML search page was not closed properly