Record constructors for builtin record types

[ChristianGruen]

Profiling shows that the repeated initialization of record construction for builtin record types…

basex/basex-core/src/main/java/org/basex/query/QueryParser.java

Line 275 in 8833343

// add record constructor functions for built-in record types

…takes needless time. The constructors are hardly used in practice. Even if it’s only fractions of milliseconds, we should try to speed this up.