Clarify the way in which starting directory is determined.
tree6886306be3fa59fba109e39878ab6550e2d6fc8f
-rw-r--r-- 31221 ANNOUNCE
-rw-r--r-- 17979 COPYING
-rw-r--r-- 199085 ChangeLog
drwxr-xr-x - LDA
-rw-r--r-- 2818 Makeconf
-rw-r--r-- 4011 Makefile
-rw-r--r-- 42357 README
-rw-r--r-- 3991 RPM.spec
-rw-r--r-- 3997 RPM.spec.in
-rw-r--r-- 6 VERSION
drwxr-xr-x - doc
drwxr-xr-x - etc
drwxr-xr-x - fontlock-test
-rw-r--r-- 4771 install-sh
drwxr-xr-x - lisp
-rw-r--r-- 649 mkinstalldirs