analyzer: move stdio known fns to sm-file.cc

analyzer: move stdio known fns to sm-file.cc

gcc/analyzer/ChangeLog:
	* region-model-impl-calls.cc (class kf_fgets): Move to sm-file.cc.
	(kf_fgets::impl_call_pre): Likewise.
	(class kf_fread): Likewise.
	(kf_fread::impl_call_pre): Likewise.
	(class kf_getchar): Likewise.
	(class kf_stdio_output_fn): Likewise.
	(register_known_functions): Move registration of
	BUILT_IN_FPRINTF, BUILT_IN_FPRINTF_UNLOCKED, BUILT_IN_FPUTC,
	BUILT_IN_FPUTC_UNLOCKED, BUILT_IN_FPUTS, BUILT_IN_FPUTS_UNLOCKED,
	BUILT_IN_FWRITE, BUILT_IN_FWRITE_UNLOCKED, BUILT_IN_PRINTF,
	BUILT_IN_PRINTF_UNLOCKED, BUILT_IN_PUTC, BUILT_IN_PUTCHAR,
	BUILT_IN_PUTCHAR_UNLOCKED, BUILT_IN_PUTC_UNLOCKED, BUILT_IN_PUTS,
	BUILT_IN_PUTS_UNLOCKED, BUILT_IN_VFPRINTF, BUILT_IN_VPRINTF,
	"getchar", "fgets", "fgets_unlocked", and "fread" to
	register_known_file_functions.
	* sm-file.cc (class kf_stdio_output_fn): Move here from
	region-model-impl-calls.cc.
	(class kf_fgets): Likewise.
	(class kf_fread): Likewise.
	(class kf_getchar): Likewise.
	(register_known_file_functions): Move registration of
	BUILT_IN_FPRINTF, BUILT_IN_FPRINTF_UNLOCKED, BUILT_IN_FPUTC,
	BUILT_IN_FPUTC_UNLOCKED, BUILT_IN_FPUTS, BUILT_IN_FPUTS_UNLOCKED,
	BUILT_IN_FWRITE, BUILT_IN_FWRITE_UNLOCKED, BUILT_IN_PRINTF,
	BUILT_IN_PRINTF_UNLOCKED, BUILT_IN_PUTC, BUILT_IN_PUTCHAR,
	BUILT_IN_PUTCHAR_UNLOCKED, BUILT_IN_PUTC_UNLOCKED, BUILT_IN_PUTS,
	BUILT_IN_PUTS_UNLOCKED, BUILT_IN_VFPRINTF, BUILT_IN_VPRINTF,
	"fgets", "fgets_unlocked", "fread", and "getchar" to here from
	register_known_functions.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>