Due to the unicode data tables, this is a pretty large library,
adding ~340K to the binary size (ie a 50% increase on some targets)
Note that nothing in-tree actually _uses_ utf8proc yet. The plan:
1) In the metadata parser, fully normalize+compose all strings.
2) When looking up font glyphs, if we do not find an exact
match for the codepoint, try to decompose and render the result.
3) Normalize all filenames as we read them, ie before we store them
in lists or compare filenames/pathnames.
4) Use utf8proc for casefolding-aware sorting (on native devices)
Change-Id: I2252cee3e7891d12ff37867231aa2c20353f857b
This is to enable binary patching of Hiby-based firmware files
Note that noting in rbutil uses this yet.
Change-Id: I03ac824dd7402d508eb4e857ad78f184eb0d0243