[folks] Marginally clarify our comments for the lt numbers.

[Travis Reitter <treitter src gnome org>]

commit 7eb855f7bd3949ade7bf6f8888e0be2165f6aeff
Author: Travis Reitter <travis reitter collabora co uk>
Date:   Tue Oct 18 10:04:30 2011 -0700

    Marginally clarify our comments for the lt numbers.
    
    This should help us avoid mangling them in the future.
    Don't quote me on that.

 configure.ac |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index c475bd6..540cec5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -7,10 +7,10 @@ m4_define([folks_micro_version], [4])
 m4_define([folks_nano_version], [1])
 
 # If library source has changed since last release, increment revision
-# If interfaces have been added, removed or changed since last release,
+# If public symbols have been added, removed or changed since last release,
 #  increment current and set revision to 0
-# If interfaces have been added since last release, increment age
-# If interfaces have been removed since last release, set age to 0
+# If public symbols have been added since last release, increment age
+# If public symbols have been removed since last release, set age to 0
 m4_define([folks_lt_current], [27])
 m4_define([folks_lt_revision], [3])
 m4_define([folks_lt_age], [3])