Add Inziu(-iosevka) & Iosevka font family in favour of tsentsiu-sans

[Artoria2e5]

Inziu is the Chinese part for the font. Iosevka is a western font family, generated by nodejs. It features 10-degree italics, which is slighter than common system default (15 deg) and thus fits monospace environments better.

Their combination is Inziu Iosevka. The family Iosevka itself without Inziu should be packaged, too, although we should write fc entrys to let Inziu Iosevka append Iosevka and write Provides for Inziu Iosevka.

For the in favour of, don't write Replaces stuffs. Just make a test in the tsentsiu-sans fc entry, and don't prepend when the list already contains inziu stuffs.

http://www.zhihu.com/question/24732078 http://yun.baidu.com/s/1sjp2GO1#path=%252F%25E5%25AD%2597%25E4%25BD%2593%252FInziu https://be5invis.github.io/Iosevka/

Proposed pkgnames:

• inziu: inziu, "Hinted SHS for low resolutions", May provide Kaigen (tc tweaks needed, decrease in font weights!).
• inziu-iosevka: inziu-iosevka, "Hinted SHS plus Iosevka for coding with low resolutions", Provides Iosevka (tc tweaks needed).
• iosevka (GitHub): iosevka, "Half-width western coding typeface inspired by Pragmata Pro, M+ and PF DIN Mono. Comes with huge charset support and hinting. Generated by nodejs.".

And a metapackage:

• tsentsiu-alt: Depends on inziu and inziu-iosevka, Provides tsentsiu-sans, Contains tc naming tweaks.

[Artoria2e5]

Inziu *m * families are half-width, but I don't know what those are. SHS HW?

[MingcongBai]

Added with 8b903ab68561ba822f21e6491c740e0d13562b86, 0a711f59cee0fe4ddf116a7fa76159cc67f3ce16, ae44f1a48e70094da15217fa453f2f898ad2111b.