Documentation generator improved to automatically convert SVG images to PDF when PDF documents are generated. This is done with Inkscape thus it becomes necessary for generation of PDF documents.
Doxygen alias "figure" added for easy insertion of images with single command for both HTML and PDF output.
Documentation is updated.
Reviewed documentation.md and added more recommendations on Document Syntax.
Introduced existing svg images in the documentation.
Description of formatting of plain text, code blocks, and references revised.
Snapshot of structure of dox folder is updated.
Copyright year is corrected in PDF documents to be always the current one.
Some grammar corrections.
unrelated changes: Unused unit OpenCL removed from UDLIST
All articles revised
README revised
comments are allowed in FILES.txt
Add gendoc.sh for Linux
Added option -s to set search engine of the HTML documents
Added 3rdparty_building docs for different platforms
help message removed from bat&sh scripts (left within tcl script)
tableofcontents added for all huge articles;
gendoc.bat doesn't change PATH variable
jpgs converted to pngs and unused pngs removed
logo displaying of pdf files fixed
Automatic detection of OCCT version number added to occtdoc.tcl
OCCT version within pdfs is got from Standard_Version.hxx; copyright changed
pdf generation process removes latex dir now
GIF images converted to PNG in technical_overview;
references fixed (incorrect reference to wok and cdl didn't touch; redundant latex option removed
Tutorial moved from Overview and made top level page
LICENSE.md moved from dox/overview to dox folder
Section related to OCCT building refactored and simplified.
WOK and CDL explicitly declared as deprecated.
