add docs for Lib.Curl, Lib.Libxml2, Lib.Mecab
update metadata
Merge branch 'pkg' of https://github.com/myoan/minikonoha

Conflicts:
	src/package-devel/Lib.Libxml2.Xmlreader/doc/ja.md
	src/package-devel/Lib.Libxml2.Xmlreader/doc/metadata
	src/package-devel/Lib.Mecab/doc/index
	src/package-devel/Lib.Mecab/doc/ja.md
	src/package-devel/Lib.Mecab/doc/metadata