Update capitalization on all of our requirements

Although pip does the right thing, there are various proxies and whatnot
that actually can get confused with the case-insensitivity.

Moving forward, we should try to make sure we put things in the files
correctly.

Change-Id: I6eb5eb8a3d11dd009f94f02da32cf9580ac7333a
Update pip depend to >= 1.0

Precise ships with 1.0 by default. Until we force everyone on to
1.4, there is no need to express a depend here which is not true.

Change-Id: Id4101fa4fd1c60a6ffef6bef3dcd03522e681231
Merge "Update capitalization on all of our requirements"
Merge "Update pip depend to >= 1.0"