freetype: Update version from 2.7 to 2.7.1

[News entry][1]:

> FreeType 2.7.1
> 2016-12-30
>
> FreeType 2.7.1 has been released. The most important news is
> preliminary support of Adobe's new CFF2 font format and variation
> fonts as specified in the new OpenType specification version 1.8. It
> also fixes the handling of raw CID fonts (which might be found in PDF
> files)
>
> See [here][2] for a list of changes.

[1]: https://www.freetype.org/index.html#news
[2]: https://sourceforge.net/projects/freetype/files/freetype2/2.7.1/

freetype.be0

@@ -1,6 +1,6 @@
 #!/bin/env beesh
 
-# BEE_VERSION freetype-2.7-0
+# BEE_VERSION freetype-2.7.1-0
 
 BEE_BUILDTYPE=autotools