Add utilities and documentation

Add portable filesize and logging C libraries and documentation for development.

doc/2.0_DEVELOPMENT/2.7_LIBRARIES

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+LIBRARIES
+=========
+
+        Each library used should be widely portbale and should lack
+    platform-dependent features. Components that are not written in standard
+    C/C++ or D should be disabled by default at compilation; only being
+    enabled by flags.
+
+        Note: libraries licensed under any version of the GNU GPL should be
+    avoided, due to the fact that these licenses require that the software
+    linking them is provided under the same terms. The LGPL is an exception, but
+    instructions for replacing the library with a different version must be
+    provided, as the LGPL requires that users can easily modify the LGPL code in
+    contrast to the common misconception that this license forbids static
+    linking. In general, copyleft and strongly reciprical licenses must be
+    avoided.
+
+    1.) Libraries should always be included as Git submodules.
+    2.) Libraries should only be included if writing the same functionality
+    would take an unreasonably long period of time.
+    3.) Libraries should be platform-agnostic, or they should at least provide
+    the ability to replace components with those required on a different system.
+    4.) All libraries must be disabled by default at compilation and must only
+    be enabled via compilation options.
+
+        Adding on, all contributions must be original and not be derived from
+    the work of another person, company, software, or any other entity that may
+    generate the content in question within this document.
+
+        Header files should only be used to declare functions.
+
+--- end of 2.7 LIBRARIES ---