Make the schema validation example program work with no arguments.

* examples/schemavalidation/main.cc: Correct the test for number of arguments.
Add @newin{2,36} to some new functions where it's missing.

* libxml++/exceptions/exception.h: Add @newin{2,36} to format_xml_error() and
format_xml_parser_error().
* libxml++/parsers/parser.h: Add @newin{2,36} to [set|get]_throw_messages().
Bug #304020.
Add some files to .gitignore.

* .gitignore: Add docs files that are copied from mm-common.
Add /MSVC_Net2010/libxml++/libxml++.rc and
/examples/dom_read_write/example_output.xml.
Improved handling of entity references and processing instructions.

* libxml++/nodes/entitydeclaration.[h|cc]: New files.
* Makefile.am:
* libxml++/Makefile.am: Add the new files.
* libxml++/libxml++.h: Add the new .h file.
* docs/manual/libxml++_without_code.xml: Add EntityDeclaration in the list
of node classes.
* libxml++/document.[h|cc]: Add add_processing_instruction().
* libxml++/nodes/element.[h|cc]: Add add_child_entity_reference() and
add_child_processing_instruction().
* libxml++/nodes/entityreference.h: Improve the description of
get_resolved_text() and get_original_text().
* libxml++/nodes/node.cc: get_namespace_prefix() and get_namespace_uri():
XML_ENTITY_DECL has no namespace. Don't try to find it.
create_wrapper(): Create an EntityDeclaration when type == XML_ENTITY_DECL.
free_wrappers(): Don't walk the child list when type == XML_ENTITY_REF_NODE.
* examples/dom_build/main.cc: Add entity declarations and references, and
processing instructions to the built xml file.
* examples/dom_parse_entities/example.dtd: Make it compatible with example.xml.
* examples/dom_parse_entities/example.xml: Add an entity definition that
contains entity references.
* examples/dom_parse_entities/main.cc: Print the parsed file both with and
without entity substitution.
* examples/dom_parser/example.dtd: Make it compatible with example.xml.
* examples/dom_parser/main.cc: Add command flag -E (Don't substitute entities).
Bug #669481
Node: Correct mis-spelt LIBXMLCPP_EXCEPTIONS_ENABLED.

* libxml++/nodes/node.h: Add some "@throws exception".
* libxml++/nodes/node.cc: Change LIBXMLCPP_EXCEPTIONS_ENABLE to
LIBXMLCPP_EXCEPTIONS_ENABLED in find_impl() and set_namespace().
Handle attributes with default values correctly.

* libxml++/attributedeclaration.[h|cc]:
* libxml++/attributenode.[h|cc]: New files.
* Makefile.am:
* libxml++/Makefile.am: Add the new files.
* libxml++/libxml++.h: Add the new .h files.
* docs/manual/libxml++_without_code.xml: Add AttributeDeclaration and
AttributeNode in the list of node classes.
* libxml++/attribute.[h|cc]: Make get_value() useful also for default values
(XML_ATTRIBUTE_DECL). Fix set_value() for attributes in a namespace.
* libxml++/nodes/element.[h|cc]: get_attribute(): Add description. Don't use
xmlHasProp(), it ignores namespace.
* libxml++/nodes/node.cc: get_namespace_prefix(), get_namespace_uri(),
set_namespace(), create_wrapper(): Add code for XML_ATTRIBUTE_DECL.
* examples/dom_parser/example.dtd: Add attribute 'title' with default value.
* examples/dom_parser/example.xml: Add attribute 'title' with explicit value.
Bug #669635.
2.35.1
Node: Add get_first_child().

* libxml++/nodes/node.[h|cc]: This is like get_children(),
but it returns only the first node, optionally returning
the first one with a certain name.
Based on a patch by Ilya Murav'jov in bug #648125 .
A fix for the previous commit.

	* libxml++/nodes/node.cc: get_first_child() const: Use the name
	parameter.
Remove the --disable-api-exceptions configure option.

And remove the #ifdefs and #else blocks from the code.
This is not used by anybody now, as far as I know, so this makes the
code easier to maintain.
Fix a warning found by clang++

	* libxml++/parsers/textreader.h: PropertyReader is a class, not
	a struct.
2.35.2
Node: Check for a null pointer, to fix a scan-build warning.

* libxml++/nodes/node.cc: This seems unlikely.
Define LIBXMLCPP_EXCEPTIONS_ENABLED unconditionally.

* configure.ac: Add AC_DEFINE([LIBXMLCPP_EXCEPTIONS_ENABLED],[1],...
Merge branch 'master' of git://git.gnome.org/libxml++
Update libxml++ to 2.35.2