Merge pull request #1042 from hpcugent/develop

release EasyBuild v1.15.0
Merge branch 'v1.15.x'
Merge branch 'v1.15.x'
Merge branch 'v1.15.x'
Added support for versionprefix to HMNS

Hopefully, this should cover the support of versionprefix in HMNS
Typo when pasting

suffix should have been prefix
Added utility to determine full version name

Stitch together the version name in utility and replace occurences
Typo
versionprefix is not always available, only use it when it's defined
keep 'versionprefix' as a required key
Merge pull request #1 from boegel/hmns_versionprefix

versionprefix is not always available, only use it when it's defined
Merge pull request #1058 from ocaisa/master

Add support for versionprefix to HMNS