Portability fixes
* do not use Object>>asString. Not all Smalltalks implement it.
* do not use Object>>name. Not all Smalltalks implement it.
* do not use Dictionary keysAndValuesRemove:. Not all Smalltalks implement it.
* do not use Class>>methods The semantics is different among Smalltalks.
Use `Class methodDictionary values` instead.
* do not modify dictionary in #at:ifAbsentPut: block!
"{ Package: 'stx:goodies/petitparser/compiler' }"
"{ NameSpace: Smalltalk }"
Error subclass:#PPCCompilationError
instanceVariableNames:''
classVariableNames:''
poolDictionaries:''
category:'PetitCompiler-Exceptions'
!
!PPCCompilationError class methodsFor:'error signalling'!
signalWith: message
^ self signal: message
! !