change development version syntax to support multiple '~' characters
change development version syntax to support multiple '~' characters


Former-commit-id: 34b1b40ba24fe52c643551c11dadd82cda2af1f0 [formerly 34b1b40ba24fe52c643551c11dadd82cda2af1f0 [formerly 88f4e6a7ebb1de1141cdb6c55d6c54e5f1502e81]]
Former-commit-id: 593dfdd3160ed9df86821990bdf7287a62bc5ed7
Former-commit-id: 95af04087b7afcfa3247ced812090d8230e4f251
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine