Merge commit '3edeb774'

* commit '3edeb774':
  configure: Allow log2 with MSVC 2013 onwards.

Conflicts:
	configure

See: 4d93e758Merged-by: Michael Niedermayer <michaelni@gmx.at>

configure

@@ -2073,7 +2073,6 @@ fast_unaligned_if_any="aarch64 ppc x86"
 simd_align_16_if_any="altivec neon sse"
 
 # system capabilities
-
 symver_if_any="symver_asm_label symver_gnu_asm"
 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
 
@@ -5508,7 +5507,7 @@ elif enabled_any msvc icl; then
             disable ebx_available
         fi
     fi
-    # msvcrt10 x64 incorrectly enables log2, only msvcrt12 onwards actually has log2.
+    # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
 fi