Makefile documentation updates, and two additional Makefile fixes

git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@89 7894878c-1315-0410-8ee3-d5d059ff63e0

doc/makefiles

@@ -55,11 +55,21 @@ Several files are generated by Makefiles:
     Dependency files for modules. Automatically generated.
   * .rd
     Dependency files for executables. Automatically generated.
+  * .ao
+    Dependency files for static libraries. Automatically generated.
+  * .lo
+    Dependency files for shared libraries. Automatically generated.
+  * .o
+    Generated modules
   * .ro
     Object files for executables. They will be linked together to create
     the executable. This extension is used to distinguish them from 
     modules (which end on .o). Also, using a different extensions makes
     the Makefile fragments much simpler.
+  * .ao
+    Object files for static libraries
+  * .lo
+    Object files for shared libraries
 
 There are lots of comments within the main Makefile. Please read them if
 you want to know more.