authors and changelog update

AUTHORS.txt

@@ -61,6 +61,7 @@ Kenneth Reitz
 Kevin Frommelt
 Kumar McMillan
 Lev Givon
+Lincoln de Sousa
 Luke Macken
 Masklinn
 Marc Abramowitz

CHANGES.txt

@@ -8,6 +8,9 @@ Changelog
   defaults and umask (i.e. permissions are not preserved), except that regular
   files with any execute permissions have the equivalent of "chmod +x" applied
   after being written (Pull #1146).
+* PreviousBuildDirError now returns a non-zero exit code and prevents the
+  previous build dir from being cleaned in all cases (Pull #1162).
+
 
 1.4.1 (2013-08-07)
 ------------------