include: Fixes to make the headers friendly with the latest wikiheaders.

include/SDL_blendmode.h

@@ -37,7 +37,7 @@ extern "C" {
 /**
  *  \brief The blend mode used in SDL_RenderCopy() and drawing operations.
  */
-typedef enum
+typedef enum SDL_BlendMode
 {
     SDL_BLENDMODE_NONE = 0x00000000,     /**< no blending
                                               dstRGBA = srcRGBA */
@@ -62,7 +62,7 @@ typedef enum
 /**
  *  \brief The blend operation used when combining source and destination pixel components
  */
-typedef enum
+typedef enum SDL_BlendOperation
 {
     SDL_BLENDOPERATION_ADD              = 0x1,  /**< dst + src: supported by all renderers */
     SDL_BLENDOPERATION_SUBTRACT         = 0x2,  /**< src - dst : supported by D3D9, D3D11, OpenGL, OpenGLES */
@@ -74,7 +74,7 @@ typedef enum
 /**
  *  \brief The normalized factor used to multiply pixel components
  */
-typedef enum
+typedef enum SDL_BlendFactor
 {
     SDL_BLENDFACTOR_ZERO                = 0x1,  /**< 0, 0, 0, 0 */
     SDL_BLENDFACTOR_ONE                 = 0x2,  /**< 1, 1, 1, 1 */