GROOVY-9712: type name may start with more than A-Z (CapitalizedIdentifier)

[eric-milles]

https://issues.apache.org/jira/browse/GROOVY-9712

Note: The parser tests that use TestUtils#doTest are silently swallowing all parser errors since there is no longer comparison against any antlr2 result.

[eric-milles]

From the issue:

Another way of looking at this is that field/property uses the generalized-typename rule and a method's return type uses standard-typename rule. The later requires a capital letter (A-Z) as the first name character. The former has allowances for lowercase names. I'm not sure why this distinction exists in the parser.

generalClassOrInterfaceType
options { baseContext = classOrInterfaceType; }
    :   qualifiedClassName typeArguments?
    ;

standardClassOrInterfaceType
options { baseContext = classOrInterfaceType; }
    :   qualifiedStandardClassName typeArguments?
    ;

[daniellansun]

getInputStream().LA(-1) could be simplified as _input.LA(-1)

[paulk-asert]

LGTM. I'll merge and include this change.

[paulk-asert]

I'll add back in the (String, boolean) variant for binary compatibility