AltiVec code and runtime cpudetect do not require CONFIG_GPL.

Make sure the latter is only checked for x86 optimizations, which are GPL.

Originally committed as revision 29390 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

libswscale/swscale.c

@@ -1301,7 +1301,7 @@ static inline void monoblack2Y(uint8_t *dst, const uint8_t *src, long width, uin
 
 //Note: we have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW+MMX2 one
 //Plain C versions
-#if (!HAVE_MMX && !HAVE_ALTIVEC) || CONFIG_RUNTIME_CPUDETECT || !CONFIG_GPL
+#if ((!HAVE_MMX || !CONFIG_GPL) && !HAVE_ALTIVEC) || CONFIG_RUNTIME_CPUDETECT
 #define COMPILE_C
 #endif
 
@@ -1972,10 +1972,10 @@ static void globalInit(void){
 
 static SwsFunc getSwsFunc(SwsContext *c)
 {
-#if CONFIG_RUNTIME_CPUDETECT && CONFIG_GPL
+#if CONFIG_RUNTIME_CPUDETECT
     int flags = c->flags;
 
-#if ARCH_X86
+#if ARCH_X86 && CONFIG_GPL
     // ordered per speed fastest first
     if (flags & SWS_CPU_CAPS_MMX2) {
         sws_init_swScale_MMX2(c);
@@ -2003,7 +2003,7 @@ static SwsFunc getSwsFunc(SwsContext *c)
 #endif
     sws_init_swScale_C(c);
     return swScale_C;
-#endif /* ARCH_X86 */
+#endif /* ARCH_X86 && CONFIG_GPL */
 #else //CONFIG_RUNTIME_CPUDETECT
 #if   HAVE_MMX2
     sws_init_swScale_MMX2(c);
@@ -2565,7 +2565,7 @@ SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int d
         __asm__ volatile("emms\n\t"::: "memory");
 #endif
 
-#if !CONFIG_RUNTIME_CPUDETECT || !CONFIG_GPL //ensure that the flags match the compiled variant if cpudetect is off
+#if !CONFIG_RUNTIME_CPUDETECT //ensure that the flags match the compiled variant if cpudetect is off
     flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);
 #if   HAVE_MMX2
     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;