makefile.unix to copy docs to the data directory for make install.
Added SAVEDIR variable to the makefile so the user doesn't need to edit AppHdr.h for SAVE_DIR_PATH.
git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@831 c06c8d41-db1a-0410-9941-cceddc491573
4EWXDZSMYTEINQRUL4OHRUZVWMKCWEPYVJVGENQPBWUYU37SP63QC
// Define SAVE_DIR to the directory where saves, bones, and score file
// will go... end it with a '/'. Since all player files will be in the
// same directory, the players UID will be appended when this option
// is set.
// If you are installing Crawl for multiple users, define SAVE_DIR
// to the directory where saves, bones, and score file will go...
// end it with a '/'. Since all player files will be in the same
// directory, the players UID will be appended when this option is
// set.