Renamed documentation files to .txt and converted them to DOS line endings so they would open properly on all systems.

Updated Makefile.in so "make dist" includes everything necessary for release.

--HG--
rename : BUGS => BUGS.txt
rename : COPYING => COPYING.txt
rename : CREDITS => CREDITS.txt
rename : INSTALL => INSTALL.txt
rename : README.android => README-android.txt
rename : README.cmake => README-cmake.txt
rename : README.DirectFB => README-directfb.txt
rename : README.gesture => README-gesture.txt
rename : README.HG => README-hg.txt
rename : README.iOS => README-ios.txt
rename : README.MacOSX => README-macosx.txt
rename : README.pandora => README-pandora.txt
rename : README.Platforms => README-platforms.txt
rename : README.Porting => README-porting.txt
rename : README.psp => README-psp.txt
rename : README.touch => README-touch.txt
rename : README.WinCE => README-wince.txt
rename : README => README.txt
rename : TODO => TODO.txt

README-platforms.txt

@@ -0,0 +1,32 @@
+
+This is a list of the platforms SDL supports, and who maintains them.
+
+Officially supported platforms
+==============================
+(code compiles, and thoroughly tested for release)
+==============================
+Windows XP
+Windows Vista
+Windows 7
+ac OS X 10.4+
+Linux 2.6+
+iOS 3.1.3+
+Android 2.3.3+
+
+Unofficially supported platforms
+================================
+(code compiles, but not thoroughly tested)
+================================
+FreeBSD
+NetBSD
+OpenBSD
+Solaris
+
+Platforms supported by volunteers
+=================================
+Haiku - maintained by Axel Dörfler <axeld@pinc-software.de>
+PSP - maintained by 527721088@qq.com
+Pandora - maintained by Scott Smith <pickle136@sbcglobal.net>
+
+Platforms that need maintainers
+===============================