version compare not working on 1.7 bleeding edge

[rogercoathup]

The standard BP_VERSION check (used by a number of 3rd party components):

version_compare( BP_VERSION, '1.3', '>' )

is not working in 1.7 bleeding edge --

I suspect because the version number is non numeric e.g. $this->version = '1.7-bleeding-6326'

[hnla]

Happens with every bleeding version (UK members will get the intended pun :) )

[r-a-y]

Duplicate of #4550.