gold patch committed: Version script ambiguities

[Ian Lance Taylor]

This patch makes gold act much more like GNU ld when parsing version
scripts.  Committed to mainline.

Ian


2010-01-11  Ian Lance Taylor  <iant@google.com>

	* script.cc (class Lazy_demangler): Recreate--revert part of patch
	of 2009-12-30.
	(Version_script_info::Version_script_info): Initialize globs_,
	default_version_, default_is_global_, and exact_.  Don't
	initialize globals_ or locals_.
	(Version_script_info::build_lookup_tables): Build local symbols
	first.
	(Version_script_info::unquote): New function.
	(Version_script_info::add_exact_match): New function.
	(Version_script_info::build_expression_list_lookup): Remove lookup
	parameter.  Add is_global parameter.  Change all callers.  Handle
	wildcard pattern specially.  Unquote pattern.  Call
	add_exact_match.
	(Version_script_info::get_name_to_match): New function.
	(Version_script_info::get_symbol_version): New function.
	(Version_script_info::get_symbol_version_helper): Remove.
	(Version_script_info::check_unmatched_names): Call unquote.
	* script.h (class Version_script_info): Change get_symbol_version
	to be non-inline and add is_global parameter; change all callers.
	Rewrite symbol_is_local.  Update declarations.  Define struct
	Version_tree_match, Exact, Globs.  Don't define struct Lookup.
	Remove globals_ and locals_ members.  Add exact_, globs_,
	default_version_, is_global_.
	(Version_script_info::Glob): Remove pattern, add expression and
	is_global.  Update constructor.  Change all callers.
	* dynobj.cc (Versions::finalize): Mark the version symbol as the
	default version.
	(Versions::symbol_section_contents): If a symbol is undefined, or
	defined in a dynamic object, set the version index to
	VER_NDX_LOCAL.
	* symtab.cc (Symbol_table::add_from_relobj): Don't call
	symbol_is_local.
	(Symbol_table::add_from_pluginobj): Likewise.
	* testsuite/ver_matching_test.sh: blaza1 and blaza go into V2.


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