INSTALL.txt document clarification

Suggested change in diff -u form:

--- INSTALL.txt.dist 2004-11-06 07:42:10.000000000 -0800
+++ INSTALL.txt 2004-11-06 07:45:48.000000000 -0800
@@ -28,8 +28,15 @@

session.cache_limiter none

-These values are set in php.ini and can be overwritten in a .htaccess
-file; you can print out your local PHP settings with PHP's phpinfo()
+You may also need to modify these parameters:
+
+ memory_limit = 8M
+
+These values are set in php.ini and are overwritten in the default
+.htaccess file. We suggest making all changes in the .htaccess file
+to avoid conflicts with other php programs on your system.
+
+You can print out your local PHP settings with PHP's phpinfo()
function.

OPTIONAL COMPONENTS

This was inspired by "session.save_handler user" breaking SquirrelMail
and Administer -> Modules running out of memory