[hatari-devel] More memory options

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Hi

as part of some ongoing changes I'm working on, I added some new options 
to allow RAM size using 128 KB, 256 KB or 512 KB in a more flexible way 
than what was used before by specifying only a number of MB.
So, it's now possible to configure Hatari to use 256 KB or 2.5 MB for 
example.

I also updated/renamed nMemorySize and nTTRamSize to STRamSize_KB and 
TTRamSize_KB for consistency and readability (only in the code, the 
config file still uses nMemorySize and nTTRamSize, although this could 
be changed too).

Both variables are now in KB instead of MB to allow sizes not multiple 
of MB.

Nicolas