Add new CHANGES file for FLTK 1.4.0.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11116 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

CHANGES

@@ -0,0 +1,24 @@
+CHANGES IN FLTK 1.4.0					RELEASED: ??? ?? ????
+
+	New features and extensions
+
+	- ...
+
+
+	New configuration options (ABI version)
+	
+	- FLTK's ABI version can be configured with configure and CMake.
+	  See documentation in README.abi-version.txt.
+
+	1.4.0 ABI FEATURES
+
+	- None. 1.4.0 is a new ABI version (breaking 1.3.x ABI).
+
+
+	Other improvements
+
+	- ...
+
+	Bug fixes
+
+	- ...