Currently, a number of configuration parsing-related functions and
classes use only `int` type for dealing with integers. Should the user
need a bigger integer value, this would result in an erroneous value
being used (`0`), as the correct value would overflow the 32-bits type.
In order to prevent these overflow, this patch replaces `int` with
`qint64` in the following functions & classes :
* CalamaresUtils::yamlScalarToVariant()
* CalamaresUtils::getInteger
* NamedSuffix
* PartitionSize
This way, sizes or other integer values greater than 2^31 (for signed
types) can be used.
Signed-off-by: Arnaud Ferraris <arnaud.ferraris@collabora.com>
