Replace is_archive with maybe_archive.

Replace is_archive with maybe_archive.

2010-12-05  H.J. Lu  <hongjiu.lu@intel.com>

	* ldfile.c (ldfile_open_file_search): Check maybe_archive instead
	of is_archive.
	* emultempl/aix.em: Likewise.
	* emultempl/elf32.em: Likewise.
	* emultempl/linux.em: Likewise.
	* emultempl/pe.em: Likewise.
	* emultempl/pep.em: Likewise.
	* emultempl/sunos.em: Likewise.
	* emultempl/vms.em: Likewise.

	* ldlang.c (new_afile): Set maybe_archive instead of is_archive..

	* ldlang.h (lang_input_statement_struct): Replace is_archive
	with maybe_archive.