Update Document Creation Process

- Add proper Build and Makefile files in Source/Doc directory
- Switch preprocessing from pp to m4 which is more supportable across platforms
- Building of documentation is still done manually as needed, but it is now easy to do under either Windows or Linux using provided files

Source/Doc/GettingStarted.md

@@ -1,13 +1,13 @@
-!include(Common.inc)
-!def(document)(Getting Started)
+include(`Common.m4')
+define({{doc_title}},{{Getting Started}})
 ---
 title: |
-   | !product
+   | doc_product doc_title
    |
-   | !document
-author: !author (mailto:!authmail)
-date: !date
-institution: !orgname
+   | Version doc_ver
+author: doc_author (mailto:doc_authmail)
+date: doc_date
+institution: doc_orgname
 documentclass: article
 classoption:
  - oneside
@@ -37,10 +37,10 @@ header-includes:
 
 ## Z80/Z180 System Software
 
-| Version !ver
-| !date
+| Version doc_ver
+| doc_date
 
-!author() [!authmail](mailto:!authmail)
+doc_author [doc_authmail](mailto:doc_authmail)
 
 ### Download
 
@@ -1383,4 +1383,4 @@ RetroBrew Computers projects is via the community forums:
 Submission of issues and bugs are welcome at the
 [RomWBW GitHub Repository](https://github.com/wwarthen/RomWBW).
 
-Also feel free to email !author at [!authmail](mailto:!authmail).
+Also feel free to email doc_author at [doc_authmail](mailto:doc_authmail).