Since before 8.0 the named arguments were not part of the interface, we
don't care about the intermediate steps of the proc_open definition. For
consistency, this makes the definition the same across all versions.
This also fixes the type for the `options` argument already in
CallMap_historical to be nullable.
The names of the arguments are now consistent across versions, while the
delta for 7.4 reflects the change of the `command` argument from
`string` to `string|array`.
Convert deltafile format to new style proposed by weirdan
Modify CallMapTest to use new format
Modify InternalCallMapHandler to use new format
Move assertions to base testcase
- Fixed inconsistencies in callmap delta files (mainly 8.0)
- Added several missing changes in the bc_* functions
- Added several missing changes in the mb_* functions
- Added several missing changes in the xml_parser_* functions
- Fixed several issues with sodium_ functions
- Removed all but one of the date_* functions. All were marked as having lost the option to return false, despite this only being true for date_format
