Many headers contains redundant header guards around #include directives:

    #ifndef ROOT_TTree
    #include "TTree.h"
    #endif

This patch removes the #ifndef's around these includes as they
don't serve any pratical purpose anymore and are no longer part
of the current ROOT coding convention.

This patch also fixes the 153 typos that are contained in the
symbols of the #ifndef directives.

Signed-off-by: Vassil Vassilev <vvasilev@cern.ch>

git-svn-id: http://root.cern.ch/svn/root/trunk@35218 27541ba8-7e3a-0410-8455-c3a389f83636

Allow THtml to find files even if they are only known as "include/TObject.h": THtml now parses all subdirs of the input path. Req by Gerhard Brandt, Fons.
Structure THtml's 1000 configuration vars a bit.
Implemented traits-like objects that allow the user to define modules, where to find files, etc, by deriving from the base classes used by THtml. 
Improve the doc search: add the top links box to all pages; add the search in there; make search ignore src/, examples/ subdirs of the output dir (i.e. only look at the doc itself) - req by Diego C.
Add info for methods' signal / menu / etc setting - req by Valeri O.
Print both last modified (source file change date) and last generated (html generation date) - suggested by Ornella.
Silence directive parser when encountering unknown directives - req by Rene.

Open issues remaining: typedef-to-class need separate page, forwarding to class's page. (req by Vassili Maroussov, Katharina Ehrhardt), TMath doc a bit broken.


git-svn-id: http://root.cern.ch/svn/root/trunk@23799 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@19826 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@19825 27541ba8-7e3a-0410-8455-c3a389f83636

Add all gEnv configs also as setters/getters; use gEnv in THtml c'tor, afterwards only getters
write search link on each page
shorten the class inh dot diagrams for complex hierarchies
Allow trailing stuff in ViewCVS link
remove spurious empty lines in directive output
fix latex column chopping (one char missing at end)
Rename a few internal funcs
Create unique directive output GIFs
update THtml doc
Add special handling for smatrix "source" dir
Skip empty sourceinfos (author,...) in footer


git-svn-id: http://root.cern.ch/svn/root/trunk@17971 27541ba8-7e3a-0410-8455-c3a389f83636

Added functionality:
* Begin_Macro/End_Macro, Begin_Latex/End_Latex (generate images, see
TDocParser's doc for now)
* module documentation (e.g. html/doc/index.html)
* help on help (savannah bug #20755)

Separate parser and output generator; public interface stays in THtml.
Create a "hook" for directives like Begin_Html/End_Html etc, to make it
easily expandable.
New layout, bug fix (savannah #20472).
Missing: lots of doc. Rule checker fixes  :-)


git-svn-id: http://root.cern.ch/svn/root/trunk@17762 27541ba8-7e3a-0410-8455-c3a389f83636