[cxxtags.vim] Follow the output format change of cxxtags_query.
[cxxtags.vim] Added feature that print type information.
[cxxtags.vim] Added feature that prints type information.
[cxxtags.vim] Added a feature that uses the rebuilding function of cxxtags_merger.
[cxxtags.vim] Added feature that updates database.
Added error checks.
[cxxtags.vim] Changed output format of type info. Added feature to print base class/struct info.
[doc] Updated README.md.
[cxxtags.vim] Changed command name.
Merge branch 'devel'

Conflicts:
	README.md