More release issues. Adding more missing doc files into 'make install' for Windows. Adding PCRE to DOS builds by default. Fixing DOS build error due to DJGPP brain damage.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@6511 c06c8d41-db1a-0410-9941-cceddc491573

Created by  ennewalker  on July 11, 2008
FL42U7W4FLFPPSBTLDNPCIRFJG6SU2X3GWWQBQPPE2EHZ72WOSOQC
Change contents