Refined the bz2 section as per Sascha's suggestion

TODO

@@ -75,11 +75,11 @@ documentation
 
 ext/bz2
 -------
-    * Add ini setting for decompression buffer size. The default 4k is to small
-      for big files and takes ages to decompress. However, 40k which perform
-      quite good with big files may be to much under certain environments as
-      default setting. There should be considered different default sizes for
-      different SAPIS (e.g. apache and cli).
+    * Add an ini setting to specify the size of decompression buffer.
+      The default 4k is too small for large files and also requires much time
+      for decompression. 40k is suitable for such files, however it may be too
+      much under certain environments. There should be appropriate default
+      settings for the various SAPI modules (e.g. apache and cli).
 
 ext/curl
 --------