Issue14559: Attempt to fix compilation with previous versions of the Microsoft Compiler.

Update the various project files with Python/random.c which was recently added.

On my old Windows XP computer:
- VS8.0 works reasonably.
- I don't have the VS7.1 compiler.
- VC6 does not compile, at least with the SDK shipped with the compiler (12 years ago!); newer SDKs might work.

PC/VC6/pythoncore.dsp

@@ -663,6 +663,10 @@ SOURCE=..\..\Python\pythonrun.c
 # End Source File
 # Begin Source File
 
+SOURCE=..\..\Python\random.c
+# End Source File
+# Begin Source File
+
 SOURCE=..\..\Objects\rangeobject.c
 # End Source File
 # Begin Source File

PC/VS7.1/pythoncore.vcproj

@@ -766,6 +766,9 @@
 		<File
 			RelativePath="..\..\Python\pythonrun.c">
 		</File>
+		<File
+			RelativePath="..\..\Python\random.c">
+		</File>
 		<File
 			RelativePath="..\..\Objects\rangeobject.c">
 		</File>

PC/VS8.0/pythoncore.vcproj

@@ -1834,6 +1834,10 @@
 				RelativePath="..\..\Python\pythonrun.c"
 				>
 			</File>
+			<File
+				RelativePath="..\..\Python\random.c"
+				>
+			</File>
 			<File
 				RelativePath="..\..\Python\structmember.c"
 				>