Minor bugfix: Added missing composer dependency to ServiceManager
Merge pull request #5493. Fix #5126 in master
Merge pull request #5186 from dol/bugfix/missing-servicemanager-dependency

Minor bugfix: Added missing composer dependency (ServiceManager) to Math package
[#5186] incorporate feedback

- Moved servicemanager to suggested dependency
- Added ext-bcmath and ext-gmp as suggested dependencies
Merge branch 'hotfix/5186' into develop

Forward port #5186

Conflicts:
	library/Zend/Math/composer.json