Release 5.8-arduino11

fix wrongly interpreted >> in template

C++: mitigate matching error on generics containing an expression

backport of geany/geany@d40932c

Make sure we don't throw things away while collecting the signature, …

…though

Parse C++11 classed enums

Manual cherry-pick of geany/geany@6c7f695

c++: Properly parse C++11 override and final members

Manual cherry-pick of
- geany/geany@95a0d4d
- geany/geany@641863c