added jvm global

See #20, release log:

• af399b2 by @rultor: Merge remote branch 'fork/19'
• e0e3f12 by @caarlos0: discover and set after local and global fixes #19
• a341a45 by @caarlos0: also loading from global
• ff4acd0 by @caarlos0: added jvm global refs #19

Released by Rultor 1.49.5, see build log