cmake: use string(TIMESTAMP)
cmake: use string(TIMESTAMP)

taiyu-len/sway,1ace/sway,taiyu-len/sway,ascent12/sway,johalun/sway,colemickens/sway,mikkeloscar/sway,ptMuta/sway,ascent12/sway,mikkeloscar/sway,4e554c4c/sway,SirCmpwn/sway,crondog/sway,taiyu-len/sway,1ace/sway,christophgysin/sway,4e554c4c/sway,sleep-walker/sway,sleep-walker/sway,christophgysin/sway,crondog/sway,colemickens/sway,1ace/sway,colemickens/sway,ascent12/sway