v1.7.16

• Add go 1.6.4, remove go 1.6.2
  (https://www.pivotaltracker.com/story/show/135369803)
• Add go 1.7.4, remove go 1.7.1
  (https://www.pivotaltracker.com/story/show/135369803)
• Change default go version from 1.6.3 to 1.7.4
  (https://www.pivotaltracker.com/story/show/132678773)
  (https://www.pivotaltracker.com/story/show/135369803)
• Rebuild and change path for go, godep, and glide binaries
  • We identified a potential, but unlikely, attack vector in our continuous
    integration system. Our own auditing strongly suggests that this attack
    vector was not taken advantage of. However, out of an abundance of caution,
    we are rebuilding all buildpack dependencies that we maintain.
    Packaged binaries:

name	version	cf_stacks
go	1.5.3	cflinuxfs2
go	1.5.4	cflinuxfs2
go	1.6.3	cflinuxfs2
go	1.6.4	cflinuxfs2
go	1.7.3	cflinuxfs2
go	1.7.4	cflinuxfs2
glide	v0.12.3	cflinuxfs2
godep	v75	cflinuxfs2

Default binary versions:

name	version
go	1.7.4

• SHA256: 58ea7e39cf91115a941a7d57f72e9a726fb36ea6daee5fd5bc60240af10e29f8