GRECLIPSE-1720 Fix. Mistreating CompareToNullExpression in
IneferenceTypeVisitor. Unit test included
Merge pull request #25 from BoykoAlex/GRECLIPSE-1720

GRECLIPSE-1720 Fix.
First drop of Groovy 2.3 - 2.3 beta 1
GRECLIPSE-1538 Unit test for enum method rename was created
GRECLIPSE-1538 Fix for failed unit test
Non J8 patched e43 compiler error
Merge pull request #26 from BoykoAlex/Non-J8_patch_compiler_error

Non J8 patched e43 compiler error
Create Groovy 2.3 feature and add to update site.
Tycho: test target platform includes groovy 2.3 compiler
Add preliminary e44 build profile
Reenable update site uploading.
Configure tycho source plugin to ignore some problems.
Merge pull request #27 from DenisMurashev/GRECLIPSE-1538

Greclipse 1538