Remove pre-Stone Soup change history from source files, and push it all

into a file crawlhistory.txt in docs/obsolete.

I used a perl script to do this under the assumption that all these change logs used the same system following the keyword "Change History".

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@6930 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on September 14, 2008
JHG2LHZ2YTRRYYD2QAQ5JIAK3AALUEHXPMJQO5KB72Q5NIF6F2ZAC
Change contents