PAGE_MAX_SIZE and PAGE_MIN_SIZE expanded as macros on MacOS

[marcingib]

Following error occurs on MacOS:

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++  -DBOOST_LOG_DYN_LINK -Drdlib_EXPORTS -I. -I/usr/local/aeron/include -I../../src/rdlib/include -I../../src/rdlib/. -isystem /usr/local/include -isystem /usr/local/include/tensorflow -std=c++14 -O3 -DNDEBUG -O3 -march=native -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk -fPIC   -fcolor-diagnostics -Qunused-arguments -include /Users/marg/prog/rd/build/release/src/rdlib/cotire/rdlib_CXX_prefix.hxx -MD -MT src/rdlib/CMakeFiles/rdlib.dir/engine/net/AeronManager.cpp.o -MF src/rdlib/CMakeFiles/rdlib.dir/engine/net/AeronManager.cpp.o.d -o src/rdlib/CMakeFiles/rdlib.dir/engine/net/AeronManager.cpp.o -c ../../src/rdlib/engine/net/AeronManager.cpp
In file included from ../../src/rdlib/engine/net/AeronManager.cpp:6:
In file included from /usr/local/aeron/include/Aeron.h:24:
In file included from /usr/local/aeron/include/concurrent/logbuffer/TermReader.h:23:
/usr/local/aeron/include/concurrent/logbuffer/LogBufferDescriptor.h:34:27: error: expected unqualified-id
static const std::int32_t PAGE_MIN_SIZE = 4 * 1024;
                          ^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include/mach/i386/vm_param.h:107:33: note: expanded from macro 'PAGE_MIN_SIZE'
#define PAGE_MIN_SIZE           PAGE_SIZE

There's workaround to add following lines before including Aeron.h:

#undef PAGE_MAX_SIZE
#undef PAGE_MIN_SIZE

Please consider renaming these variables.

[tmontgomery]

These have now been renamed. So, should not conflict. Thanks!