gsdx: fix a couple of typo

From @micove

plugins/GSdx/GSWndEGL.cpp

@@ -80,7 +80,7 @@ void GSWndEGL::CreateContext(int major, int minor)
 	if (status == EGL_BAD_ATTRIBUTE || status == EGL_BAD_MATCH) {
 		// Radeon/Gallium don't support advance attribute. Fallback to random value
 		// Note: Intel gives an EGL_BAD_MATCH. I don't know why but let's by stubborn and retry.
-		fprintf(stderr, "EGL: warning your driver doesn't suport advance openGL context attributes\n");
+		fprintf(stderr, "EGL: warning your driver doesn't support advance openGL context attributes\n");
 		m_eglContext = eglCreateContext(m_eglDisplay, eglConfig, EGL_NO_CONTEXT, NullContextAttribs);
 		status = eglGetError();
 	}

plugins/GSdx/res/glsl_source.h

@@ -419,7 +419,7 @@ static const char* shadeboost_glsl =
 	"	const float brt = SB_BRIGHTNESS / 50.0;\n"
 	"	const float con = SB_CONTRAST / 50.0;\n"
 	"	\n"
-	"	// Increase or decrease theese values to adjust r, g and b color channels seperately\n"
+	"	// Increase or decrease these values to adjust r, g and b color channels seperately\n"
 	"	const float AvgLumR = 0.5;\n"
 	"	const float AvgLumG = 0.5;\n"
 	"	const float AvgLumB = 0.5;\n"

plugins/GSdx/res/shadeboost.fx

@@ -13,7 +13,7 @@ float4 ContrastSaturationBrightness(float4 color) // Ported to HLSL
 	const float brt = SB_BRIGHTNESS / 50.0;
 	const float con = SB_CONTRAST / 50.0;
 	
-	// Increase or decrease theese values to adjust r, g and b color channels seperately
+	// Increase or decrease these values to adjust r, g and b color channels seperately
 	const float AvgLumR = 0.5;
 	const float AvgLumG = 0.5;
 	const float AvgLumB = 0.5;

plugins/GSdx/res/shadeboost.glsl

@@ -43,7 +43,7 @@ vec4 ContrastSaturationBrightness(vec4 color)
 	const float brt = SB_BRIGHTNESS / 50.0;
 	const float con = SB_CONTRAST / 50.0;
 	
-	// Increase or decrease theese values to adjust r, g and b color channels seperately
+	// Increase or decrease these values to adjust r, g and b color channels seperately
 	const float AvgLumR = 0.5;
 	const float AvgLumG = 0.5;
 	const float AvgLumB = 0.5;