dependencies: Add openmp 5.0
Since it's been released and we know what the version it will return is.
@@ -234,6 +234,7 @@ class MPIDependency(ExternalDependency):
class OpenMPDependency(ExternalDependency):
# Map date of specification release (which is the macro value) to a version.
VERSIONS = {
+ '201811': '5.0',
'201511': '4.5',
'201307': '4.0',
'201107': '3.1',
