PR python/13599:

	PR python/13599:
	* python/py-symbol.c (sympy_line): New function.
	(symbol_object_getset): Add "line".
gdb/doc
	* gdb.texinfo (Symbols In Python): Document Symbol.line.
gdb/testsuite
	* gdb.python/py-symbol.c (qq): New global.
	* gdb.python/py-symbol.exp: Add test for frame-less
	lookup_symbol.
	* gdb.python/py-symtab.exp: Fix line number.