Verify parameter names of function aliases

[kocsismate]

Remaining errors that I'm not sure what to do with:

bzwrite(): Argument $bz of aliased function fwrite() is missing
bzflush(): Argument $bz of aliased function fflush() is missing
bzclose(): Argument $bz of aliased function fclose() is missing

[nikic]

Remaining errors that I'm not sure what to do with:

bzwrite(): Argument $bz of aliased function fwrite() is missing
bzflush(): Argument $bz of aliased function fflush() is missing
bzclose(): Argument $bz of aliased function fclose() is missing

I think we should mark those as @implementation-alias. They're not documented as aliases either.