Updated the document for 0.1 alpha 2.4.

Changelog.txt

@@ -1,4 +1,19 @@
 OpenBLAS ChangeLog
+====================================================================
+Version 0.1 alpha2.4
+16-Sep-2011
+common:
+	* Fixed a bug about installation. The header file "fblas77.h" 
+	  works fine now.
+	* Fixed #61 a building bug about setting TARGET and DYNAMIC_ARCH.
+	* Try to handle absolute path of shared library in OSX. (#57)
+	  Thank Mr.Kane.
+
+x86/x86_64:
+	* Fixed #58 zdot/xdot SEGFAULT bug with GCC-4.6 on x86. According 
+	  to i386 calling convention, The callee should remove the first 
+	  hidden parameter.Thank Mr. John for this patch. 
+
 ====================================================================
 Version 0.1 alpha2.3
 5-Sep-2011