+ Rename lua and lua-devel to lua52 and lua52-devel
+ Modify packages depending on lua52 accordingly:
+ Many packages auto-detect lua52 files
+ Some packages need hints where / how to find lua52
+ One package (xmoto) downgraded to lua51, because it wouldn't find lua52
+ One package (vim) upgraded to lua (5.3.1)
There may be more packages upgradable without problems.
I didn't want to change too much in this move without the
respective package maintainers first taking a look.
Most notably conky-cli wouldn't work with lua52. I upgraded it
to 1.10.0 (same as conky) and tried to keep the flags the same
for the change from gnu-configure to cmake.