GROOVY-5863: ImportCustomizer for CompilerCustomizationBuilder is not added to configscript CompilerConfiguration
GROOVY-5812 fix type conversion bug for direct method calls
Merge pull request #91 from andresteingress/missing_customizer

GROOVY-5863: ImportCustomizer for CompilerCustomizationBuilder is not ad...
merged
GROOVY-5874: Closure shared variables are not rechecked in LHS of binary expressions
    * partial fix since there were two issues in one
    * test case for GROOVY-5893