Bugfix composite glyphs

[Finii]

[why] Glyphs with references, for example a i acute that is assembled (in some fonts) from dottless i and actue fail to come out with correct bearings.

[how] It is rather hard to adjust all the layers correctly. The simple approach is to replace the composit glyphs with their actual component-outlines. After that the scaling can happen as any ordinary glyph.

The drawback is that the font needs more memory, especially if it has a large amount of composite glyphs.

We need to do this in two loops because the unlinking must happen before any referenced glyph has been modified.

[note] Also fix some code already fixed in PR #34 here for convenience.

Fixes: #29 Fixes: #32 Fixes: https://github.com/fontforge/fontforge/issues/5222

Related: #25

[Finii]

This PR has two commits, both fix the problem

commit / solution 1

• Keeps composite glyphs composits (does not replicate the referenced glyphs)
• Introduces small shifts of the components if the width change is bigger

commit / solution 2

• Converts all composite glyphs to ordinary outline glyphs (means the outlines are duplicated)
• Size increase
• No resizing errors even with big changes