fix build ubuntu16.10

fix-build-error_gcc6205.txt

+Build error when compiling with gcc/g++ 6.2.0-5 (Ubuntu 16.10)
+
+error: ‘long int juce::FlacNamespace::lround(double)’ conflicts with a previous declaration
+static inline long int lround(double x)
+ 
+easy FIX:
+Comment out line 65-67 of: /JuceLibraryCode/modules/juce_format/codecs/flac/libFLAC/lpc_flac.c
+
+/*static inline long int lround(double x) {
+    return (long)(x + copysign (0.5, x));
+}*/