Explain why we're not setting the output name for static libraries when on Windows.

CMakeLists.txt

@@ -121,6 +121,9 @@ add_library(json-c-static
 set_property(TARGET json-c PROPERTY C_STANDARD 99)
 set_property(TARGET json-c-static PROPERTY C_STANDARD 99)
 if (NOT MSVC)
+# Since MS Windows re-uses the .lib suffix for both static libraries
+#  and the "import library" that's needed to actually link against a
+#  dll, we can't use the same name for static and dynamic libs. :(
 set_target_properties(json-c-static PROPERTIES OUTPUT_NAME json-c)
 endif()