RFR: Initial version of census upgrade bot [v2]

[Robin Westberg]

> Allows automated conversion of census.xml to the Skara format.

Robin Westberg has updated the pull request incrementally with one additional commit since the last revision:

  Avoid duplicating the XML class already present in the Census module

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Changes:
  - all: https://git.openjdk.java.net/skara/pull/1019/files
  - new: https://git.openjdk.java.net/skara/pull/1019/files/705b6362..2718fadb

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=skara&pr=1019&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=skara&pr=1019&range=00-01

  Stats: 398 lines in 18 files changed: 201 ins; 197 del; 0 mod
  Patch: https://git.openjdk.java.net/skara/pull/1019.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/1019/head:pull/1019

PR: https://git.openjdk.java.net/skara/pull/1019