Update libstdc++ manual in preparation for GCC 8 release
* doc/xml/manual/abi.xml: Document header locations in recent
releases.
* doc/xml/manual/evolution.xml: Add API changes since GCC 5.
* doc/xml/manual/spine.xml: Update copyright years.
* doc/xml/manual/strings.xml: Adjust tolower example to avoid
undefined behaviour.
* doc/xml/manual/test.xml: Update outdated notes on VERIFY in tests.
* doc/html/*: Regenerate.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@259308 138bc75d-0d04-0410-961f-82ee72b054a4
27 files changed: