Disable MacVim plugins for now

The supporting files for CTGradient and RBSplitView causes several
warnings when compiling for 64 bit.  Since nobody uses MacVim plugins
I have decided to disable them instead of having to support these files
(although these warnings are easy enough to fix for anybody interested).

src/MacVim/CTGradient.m

@@ -7,6 +7,7 @@
 //  Released into public domain on 4/10/08.
 //
 //  Version: 1.8
+#ifdef MM_ENABLE_PLUGINS
 
 #import "CTGradient.h"
 
@@ -1266,3 +1267,5 @@ void resolveHSV(float *color1, float *color2)	//H value may be undefined (i.e. g
 	}
 
 @end
+
+#endif // MM_ENABLE_PLUGINS

src/MacVim/MacVim.h

@@ -13,9 +13,10 @@
 
 
 //
-// Enable support for MacVim plugins (not to be confused with Vim plugins!).
+// Uncomment to enable support for MacVim plugins (not to be confused with Vim
+// plugins!).
 //
-#define MM_ENABLE_PLUGINS
+//#define MM_ENABLE_PLUGINS
 
 
 // Taken from /usr/include/AvailabilityMacros.h

src/MacVim/RBSplitSubview.m

@@ -6,6 +6,7 @@
 //  Copyright 2004-2006 Rainer Brockerhoff.
 //	Some Rights Reserved under the Creative Commons Attribution License, version 2.5, and/or the MIT License.
 //
+#ifdef MM_ENABLE_PLUGINS
 
 #import "RBSplitView.h"
 #import "RBSplitViewPrivateDefines.h"
@@ -925,3 +926,4 @@ - (double)RB___fraction {
 
 @end
 
+#endif // MM_ENABLE_PLUGINS

src/MacVim/RBSplitView.m

@@ -6,6 +6,7 @@
 //  Copyright 2004-2006 Rainer Brockerhoff.
 //	Some Rights Reserved under the Creative Commons Attribution License, version 2.5, and/or the MIT License.
 //
+#ifdef MM_ENABLE_PLUGINS
 
 #import "RBSplitView.h"
 #import "RBSplitViewPrivateDefines.h"
@@ -1732,3 +1733,4 @@ - (void)RB___adjustSubviewsExcepting:(RBSplitSubview*)excepting {
 
 @end
 
+#endif // MM_ENABLE_PLUGINS