ikm.html: add missing plotting command in one of the examples
phow_caltech101: pass the same arguments to vl_homkermap on train and test
doxygen.conf: upgrade to Doxygen v1.8.5
webdoc.py: fix bug yielding incorrect TOCs
webdoc.py: adjust error and warning messages to be detectable by Xcode
doc: reorganize tutorial files
gmm.c: cosmetic fix
Xcode: updates project to new tutorial files layout
vl_plotbox.m: improve MATLAB documentation
doxygen: fix incompatibility with latest Doxygen versions

Using the @internal command inline with other commands appear to confuse recent versions of Doxygen.
lbp: improve documentation and simplify code
mser: improve documentation

Converts Xfig figures into SVG; modernize the structure of the documentation.
webdoc.py: add ability to generate a documentation index

Now webdoc.py can generate and index file mapping tag IDs to HTML pages and anchors (similar but much simpler than a doxygen tag file). The new index is used by vl_help() to link to the appropriate part of the documentation.
vlfeat.css: small tweak to the appearance of the sidebar
vlfeat.bib: add LBP paper
doc.mak and vl_help.m: create index using webdoc and use it in vl_help

Uses the new webdoc functionality to create and index of the documentation.
doc: fix MATLAB info file

The info file was pointing to the incorrect location for the MATLAB HTML documentation.
doc: improve tutorial on the concept of frame and the documentation of vl_frame2oell

This patch also fixes a bug in vl_demo_frame.m.
doc.mak: removes dependency on Inkscape

We give up using Inkscape to integrate LaTeX equation in figures. The additional dependency to Inkscape and complexity of the compilation process do not seem to be worth it.
liop: cosmetic fix