#548 additional quickfixes for undefined variable

[Tim Diggins]

would be good to have additional quickfixes for undefined variable (these are very like java's):

currently there are:
create $variablename class
create $variablename method

would be good to also have
create $variablename local variable

OR (if the variablename is allcaps (isupper()))
create $variablename global variable/constant.

The variablename should be created just before the first problem marker for the variablename with the current method/scope.