PR driver/27622

	* pex-common.h (struct pex_funcs): Add toclose parameter to
	exec_child field.
	* pex-common.c (pex_run_in_environment): Pass toclose to
	exec_child.
	* pex-djgpp.c (pex_djgpp_exec_child): Add toclose parameter.
	* pex-unix.c (pex_unix_exec_child): Likewise.
	* pex-msdos.c (pex_msdos_exec_child): Likewise.
	* pex-win32.c (pex_win32_exec_child): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@116494 138bc75d-0d04-0410-961f-82ee72b054a4