adaint.c (__gnat_to_canonical_file_spec): Check for error returns in call to decc...

adaint.c (__gnat_to_canonical_file_spec): Check for error returns in call to decc$translate_vms.

2005-06-14  Doug Rupp  <rupp@adacore.com>
	    Pascal Obry  <obry@adacore.com>

	* adaint.c (__gnat_to_canonical_file_spec): Check for error returns in
	call to decc$translate_vms.
	(__gnat_locate_regular_file): Check if the path_val contains quotes. We
	need to remove those quotes before catenating the filename.
	(__gnat_locate_exec_on_path): improvements to the Win32 section:
	* avoid allocating the memory twice for better efficiency;
	* allocate 32K buffer for environment expansion as suggested by MSDN;
	* prepend ".;" to the path so that current directory is searched too.

From-SVN: r101020