re PR c++/56544 (documentation for __cplusplus is out of date)

2013-06-19  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/56544
	* doc/cpp.texi [Standard Predefined Macros, __cplusplus]: Document
	that now in C++ the value is correct per the C++ standards.

From-SVN: r200193