added a MIT license file

added a rule to transform a file with a stylesheet
search paths, xslsheet are set with variables, this can be changed
dependency with coreutils.xml is included (don't know another mean atm)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12668 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/documentation/Shell_Tools-Guide.xml

@@ -22,7 +22,7 @@
 <!ENTITY coreutils SYSTEM "coreutils.xml">
 
 <!-- license -->
-<!ENTITY gfdl SYSTEM "license.xml">
+<!ENTITY license SYSTEM "license.xml">
 
 <!-- Text Macros -->
 <!ENTITY haikuorg '<ulink url="http://www.haiku-os.org">Haiku</ulink>'>
@@ -63,6 +63,6 @@
 <!-- 
 	The License 
 -->
-&gfdl;
+&license;
 
 </book>