[librsvg] (48 commits) ...Merge branch 'xml-processing'

[Federico Mena Quintero <federico src gnome org>]

Summary of changes:

  f8fe8cc... RsvgSaxHandlerStyle - don't use an RsvgSaxHandlerDefs struc
  0319fa1... rsvg-load: Remove superfluous checks for the vtable functio
  0ce5df4... rsvg-load: Fix use-after-free in style_handler_end()
  0ec3601... rsvg-load: Fix use-after-free in xinclude_handler_end() if 
  31543f6... Don't use a global variable for the xmlSAXHandler
  2261bc6... RsvgLoad: move all the XML state to a separate structure
  8b934ba... xml.rs: New file; start moving the XML parsing state to Rus
  2ca3daf... Move the "currentnode" to XmlState in Rust
  fb42d16... Port the element_name_stack to Rust
  0540650... Port standard_element_start() to Rust
  2cecd9b... Inline rsvg_load_set_node_atts() in its only caller
  94155d9... standard_element_end(): Extract this function from sax_end_
  cb8e8e5... Port standard_element_end() to Rust
  890b43c... Minimal docs for XmlState
  9e20b1c... Port characters_impl() to Rust; it's now add_characters()
  ee3a851... Remove a bunch of unused functions
  1dcaee3... XmlContext: new trait for XML parsing contexts
  d934751... Rewrite the machinery for nested XML handlers in Rust
  ad725cc... Some documentation for XmlState
  6133971... NodeCreationContext: move the actual node creation to its o
  549c761... NodeCreationContext: add a case for the <style> element
  971688e... NodeCreationContext: provide a little constructor for the i
  5fc3ca2... Return Option from end_element() and get_node() in XmlHandl
  0261040... Port <style> element handling to Rust
  38797bc... rsvg-load.c: Remove leftover handling of the <style> elemen
  09a3891... defs::Reference - encapsulate the micro-parser for uri#frag
  2e75b99... Defs::lookup() - Use Reference::parse() instead of doing th
  3fa7e9e... feImage: Use Reference::parse to see if we are dealing with
  a620289... node.rs: Remove unused import
  c88e25b... end_element: rename svg.set_delayed_style()
  7d8d7c5... characters(): pass element name to node_new()
  7024241... create_node() - don't pass element name to new_node.set_sty
  0ee8831... node.rs: remove unused import
  2554116... tests/dimensions.c: Make assertions in the main test functi
  c84d213... Pass the previous_handler down to the start_element impleme
  af417dd... wip: xinclude, in acquire_text()
  6d6d3b8... Don't use dynamic dispatch for the XML handlers; we only ha
  925e75d... XmlState: split style_start_element() into valid and invali
  fe276c0... wip: xinclude fallback
  2eb0617... wip: xinclude for text
  550d396... cargo fmt
  e14253a... Use a real NodeStyle for the <style> element instead of spe
  65f77e1... Support <xi:include parse="text"> inclusions
  37ba693... Make xi:fallback work for the <xi:include parse="text"> cas
  f5e4388... Add tests for xi:include in text mode
  9d31692... Hook up the C code to handle XML xi:include into the Rust c
  ea63ebf... Remove unused C code for XML loading
  d06e52a... Merge branch 'xml-processing'