Replace usage of the term "spermy" with "approximate".

[postmodern]

• The "spermy" or "twiddle wakka" operator (~>) is similar to the
  greater-equal-then (>=) version operator, except that it matches
  families of versions. This version operator also uses a Tilde character,
  which is commonly used to denote approximate values
  (See definition 2.b http://www.merriam-webster.com/dictionary/tilde).

[practicingruby]

@zenspider: Thoughts on this? This has been in the back of my mind since I started digging into RubyGems source. Can we at least get an alias that isn't so... spermy?

[trans]

MUCH better than "spermy". The only other alternative I can think of that conveys the intent is "semantic".

[practicingruby]

@trans In theory I like semantic but as I said on the other thread I think it's a loaded term with a particular meaning (semver) which is probably too strong of an opinion to bake into RubyGems.

[practicingruby]

@zenspider, @evanphx: Thoughts on this patch?

[practicingruby]

Just a FYI, @zenspider said it was fine for me to merge this if I check to make sure it doesn't affect anything. I'll look into it when I have time, but if someone else on RubyGems team wants to do that for me, please do.

[luislavena]

If I can comment, I like approximate more than pessimistic (which has been used in the past in some cases to represent this).

[practicingruby]

@luislavena, cool. Using approximate is the plan.

[steveklabnik]

+1.

[steveklabnik]

@sandal I have tested this patch against HEAD, and it still passes the tests. Per our discussion, you should merge it.

[practicingruby]

Merged, but I'm not actively working on RubyGems, so if it causes any problems for anyone that is, feel free to revert.