ly: Adding turkish-makam.ly

Contribution from Adam Good

[A] fantastic place to start with support for transposable Turkish makam, with transposing limitations due to unfortunate limitations in the theory itself.

[At least it] gets us started without the requirememnts of having to include Graham Breed's regular.ly i.e. this enhancemnet works with the stnadard LilyPond codebase.

I've done TONS of testing, have goals for down the road that involve more support if only there were more accidental glyphs available.


1. Support for better transposition.
Not all transpositions are possible
but, it's a huge improvement over
current makam.ly

2. The current makam.ly has no
support for key signatures due
to poor transposition. This new
file adds support for 201 makams.

Example:
\key g \rast
brings up the key signature for makam rast.

3. Support for key signature accidental
order for these makams.

Most makams use combinations of
accidentals

Example:
backwards flat PLUS sharp sign.
This puts everything in order as per
the current theory in Turkish music.

4. Carefully added padding pairs
between accidentals in key signatures.