Use of pattern rules instead of suffix rules

There is no need for Suffixes any more. This speeds up make since no implicit rules are called.
Advantages of pattern rules

- More powerful and flexible than suffix rules
- Possible to add dependencies. For instance, ofiles depend on the Makefiles so ofiles are automatically generated when Makefiles are modified.

Example of a Suffix rule

.c.o: matches a file test.o to test.c
The disadvantage of suffix rules is that you can't specify any prefixes or letters at the end of a filename. You also can't specify directories.
Example of Pattern rules
Use of suffixes:

%.o : %win.c matches a file test.o to testwin.c
Matches object files in a subdirectory:

$(OBJECT_DIR)/%.o : %win.c matches a object file test.o in a subdir to testwin.c
Redirection of object files to the subdir can be done without VPATH .

| Note
| Pattern rules and suffix rules cannot be used together to build inherence chains! So if you have self-defined suffix rules, you will need to rewrite these suffix rules to pattern rules.