[Pharo-project] [update 3.0] #30069

[Marcus Denker]

30069
-----

10423 simplify #firstPrecodeCommentFor:
        https://pharo.fogbugz.com/f/cases/10423
        
10426 move #parseSelector to Compiler
        https://pharo.fogbugz.com/f/cases/10426

Diff information:
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Traits-MarcusDenker.481
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Tools-MarcusDenker.1085
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/System-Changes-MarcusDenker.200
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/System-FilePackage-MarcusDenker.76
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/NautilusRefactoring-MarcusDenker.87
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Kernel-MarcusDenker.1389
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/DebuggerModel-MarcusDenker.29
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Compiler-MarcusDenker.407
http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/AST-Core-MarcusDenker.138