Tonel: fixes & cleanup of `TonelFileUtils` hierarchy Fix `TonelFileUtilsStX` and make it the implementation used on Smalltalk/X. Also remove `TonelFileSystemUtils` that uses Pharo "filesystem" package (and therefore of no use on Smalltalk/X)

Fix `Class >> #poolDictionaryNames` ...to return names, not the pools itself, as the name suggests

Add missing `MSCannotLoadMethodError`

By default, allow overwriting files in the cache repository.

Merge

Use (specified) source code porter when writing .mcz By default, only end-of-line comments are fixed and namespace prefixes are stripped but users may configure it to use custom porting class (using snapshot options). The default choice should be safe since nor Squeak nor Pharo support either end-of-line comments or C++ style namespace prefixes.

Tonel: remove `self flag:`

Tonel: add utility methods `TonelRepository class >> #discover:` and `... >> #discoverPackage:`

Tonel: use package name from MCVersionInfo ...do NOT infer it from package categories (which is complete rubbish - why to *guess* when we are passed version info which *knows* the name?) In Smalltalk/X, class categories do not exist by themselves, they only exist if there's a class in that category. This could (and did) lead to using wrong package name when filing out a package.

Tonel: fix writing property lists in Tonel files Due to a differences in `#asDictionary`, properties in Tonel files were incorrectly written. This commit fixes the issue by avoiding use of `asDictionary` altogether.