Fix problem with includes for ccpcheck

Src/ScalFmmConfig.h.cmake

 // See LICENCE file at project root
+///
+/// File generated by cmake
 
+// Do not remove any line
+///////////////////////////////////////////////////////
 #ifndef SSCALFMMCONFIG_H
 #define SSCALFMMCONFIG_H
 ///////////////////////////////////////////////////////

Src/Utils/FAvx.hpp

@@ -5,9 +5,10 @@
 #include "FGlobal.hpp"
 #ifndef SCALFMM_USE_AVX
 #error The AVX header is included while SCALFMM_USE_AVX is turned OFF
-#endif
+#else 
+
 
-#include "immintrin.h"
+#include <immintrin.h>
 
 #ifdef __AVXPE_INTEL_COMPILER
 
@@ -80,5 +81,5 @@ inline __m256 operator/(const __m256& v1, const __m256& v2){
 }
 
 #endif
-
+#endif
 #endif

Src/Utils/FAvx2.hpp

@@ -7,7 +7,7 @@
 #error The AVX header is included while SCALFMM_USE_AVX is turned OFF
 #endif
 
-#include "immintrin.h"
+#include <immintrin.h>
 
 #ifdef __MIC__