Merge topic 'vim-syntax-updates'

cd7ed47c Aux: highlight commands using Function
bca8be58 Aux: sort the highlighting list
7decbe8f Aux: highlight CMAKE_{CMAKE,CPACK}_COMMAND variables
2b57b139 Aux: highlight modules using Include
8ac4e2cf Aux: highlight conditiona and repeat commands differently
3b3bd880 Aux: highlight deprecated commands as warnings
481f8cf1 Aux: remove unused highlight links
ffa44a39 Aux: highlight Lua-style comments
29eeb9a8 Aux: check spelling in comments