- remove from GS
- remove duplication across Config and ChoicePage
- improve translations (presumably "msdos or gpt" is the most
complicated it will get)
FIXES#1735
- when (manually) using an existing LV, it shouldn't be closed
prior to formatting, since that kills the volume and then the
path (/dev/myvg/mylv) no longer exists. Then creating the
filesysytem on that device path fails.
- Strings were being used as logical values, and then logged
(which should be in English) and also used in the UI (which
should be localized). Replace with a MessageAndPath class,
used only locally, that defers the translation until called-
upon explicitly.
- Replace some VG stuff with similar calls to apply().
Returning partition full-paths instead of only the block-device-name
simplifies later code -- which would prepend /dev/ to the block-
device-name and umount that.
- the tryX() functions weirdly return a string that is used for
debug-logging. Document that. The untranslated string is
later used for user-facing messages. Mark that as FIXME.
- factor out the loop-over-names-and-append to news, because that
makes the overall story of what is happening hard to read.
- all calls to tryCryptoClose() called tryUnmount() first, so
put that call inside tryCryptoClose(), so the interface is simpler.
The `partition.conf` file contains an EFI-size. The default is 300MiB,
but distributions might like to use a bigger (or smaller) value.
Apply the configuration consistently everywhere where we need
"the size of the EFI partition". Extend the internal method
to look at the configured size.
This class doesn't really set a pointer -- it is a scoped assignment
through a pointer, which **can** set a value on destruction (when
it leaves scope). Rename it.
While here, extend the API so that it can do an assignment to the
underlying object **now**, while also doing a scoped assignment
later when it leaves scope. This makes some code a bit easier
to read ("in this scope, X is now <v> and then it becomes <v'>")
