GitLab

Fix abort when sorting the sprites by name and one or more sprite viewers are open, also massively simplified it since the copying around of main_sprite blocks was pointless - much simpler to just rejoin the linked list leaving the data in place.

*Tidy up
 Delete awk.*, change to use central 'AwkVers' script.
 Delete h.types.
 Delete h.Paint, it's a duplicate of h.main.
 Delete writepixel, swap to using the one in RISCOS_Lib
 Retire 'h.fixes', switches collapsed, bugfixes proven after 18 years use.
 Cast away some warnings.
 Sprinkled in some consts, moved pointer qualifiers to get syntax colouring
 right.
 Remove local SWI defines, read from <swis.h> now.
 !MkInstall now installs into <Install$Dir>.Apps
*Little UI changes
 Make the colour number in the colour picker be in the right place vertically
 and correct horizontal position of 'T' and 'E' for ECFs.
 In the create new sprite dialogue box the 32k and 16M options are shaded
 when a palette is requested, this avoids the problem of selecting a deep
 co...