fix macOS build (following Projucer changes made in Windows, which removed /Applications/JUCE/modules from its headers). move JUCE headers under source control, so that Windows and macOS can both build against same version of JUCE. remove AUv3 target (I think it's an iOS thing, so it will never work with this macOS fluidsynth dylib).

modules/juce_cryptography/encryption/juce_Primes.h

@@ -0,0 +1,75 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2017 - ROLI Ltd.
+
+   JUCE is an open source library subject to commercial or open-source
+   licensing.
+
+   By using JUCE, you agree to the terms of both the JUCE 5 End-User License
+   Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
+   27th April 2017).
+
+   End User License Agreement: www.juce.com/juce-5-licence
+   Privacy Policy: www.juce.com/juce-5-privacy-policy
+
+   Or: You may also use this code under the terms of the GPL v3 (see
+   www.gnu.org/licenses).
+
+   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
+   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
+   DISCLAIMED.
+
+  ==============================================================================
+*/
+
+namespace juce
+{
+
+//==============================================================================
+/**
+    Prime number creation class.
+
+    This class contains static methods for generating and testing prime numbers.
+
+    @see BigInteger
+
+    @tags{Cryptography}
+*/
+class JUCE_API  Primes
+{
+public:
+    //==============================================================================
+    /** Creates a random prime number with a given bit-length.
+
+        The certainty parameter specifies how many iterations to use when testing
+        for primality. A safe value might be anything over about 20-30.
+
+        The randomSeeds parameter lets you optionally pass it a set of values with
+        which to seed the random number generation, improving the security of the
+        keys generated.
+    */
+    static BigInteger createProbablePrime (int bitLength,
+                                           int certainty,
+                                           const int* randomSeeds = 0,
+                                           int numRandomSeeds = 0);
+
+    /** Tests a number to see if it's prime.
+
+        This isn't a bulletproof test, it uses a Miller-Rabin test to determine
+        whether the number is prime.
+
+        The certainty parameter specifies how many iterations to use when testing - a
+        safe value might be anything over about 20-30.
+    */
+    static bool isProbablyPrime (const BigInteger& number, int certainty);
+
+
+private:
+    Primes();
+
+    JUCE_DECLARE_NON_COPYABLE (Primes)
+};
+
+} // namespace juce