Patch from Chuanjian Shen:     1.) "forall" and "where" statement folding bug.     2.) simple folding with "do label" structure.     3.) label colourise bug.     4.) number colourise bug (such as 1.D0)
Patch from Chuanjian Shen:
    1.) "forall" and "where" statement folding bug.
    2.) simple folding with "do label" structure.
    3.) label colourise bug.
    4.) number colourise bug (such as 1.D0)

R1dO/scintilla_clone,R1dO/scintilla_clone,R1dO/scintilla_clone,R1dO/scintilla_clone,R1dO/scintilla_clone,R1dO/scintilla_clone,R1dO/scintilla_clone,R1dO/scintilla_clone