[Firebird-docs] Firebird 2.5 Sprachreferenz migration

[Mark R. <ma...@la...>]

I have migrated to German Firebird 2.5 Language Reference (Firebird 2.5 
Sprachreferenz) to AsciiDoc.

Links:
https://www.firebirdsql.org/file/documentation/html/de/refdocs/fblangref25/firebird-25-sprachreferenz.html
https://www.firebirdsql.org/file/documentation/pdf/de/refdocs/fblangref25/firebird-25-sprachreferenz.pdf

I will link them from the home page later this week.

Be aware, I noticed some parts of this language reference sometimes 
still have English; this was already the case in the original. Some of 
the fixes I introduced in the English version, I copied without 
translation, and in some cases I used Google translate.

Mark
-- 
Mark Rotteveel