Modify buildhistory.sh (branch change already pushed)
Modify buildhistory.sh (branch change already pushed)

- Include 1.4.x which will make it easier to track progress
- Slim down what's committed in the history branch (no docs,
  no web site, no CLDR/TZDB data, no build cache)

The 1.4.x part won't change what's generated for the web site at the
moment, but it will allow me to create a separate branch to just
*locally* generate API docs to include 1.3.x to 1.4.x changes, and
1.4.x to 2.0.x changes. We'll only add 1.4.x to the public docs when
it's very near to shipping.

BenJenkinson/nodatime,BenJenkinson/nodatime,malcolmr/nodatime,nodatime/nodatime,malcolmr/nodatime,malcolmr/nodatime,jskeet/nodatime,nodatime/nodatime,malcolmr/nodatime,jskeet/nodatime