AMQP-CPP overwrites reserved preprocessor definitions: __BYTE_ORDER, __BIG_ENDIAN, __LITTLE_ENDIAN #546
Description
Describe the bug
In the header file endian.h (line 104ff) AMQP-CPP sets the reserved processor definitions __BYTE_ORDER, __BIG_ENDIAN, __LITTLE_ENDIAN to custom values.
This causes (for example) a compiler error when using boost::math because boost uses the values of those identifiers to detect the current system's endianness (in <boost/predef/other/endian.h>).
This results in a compiler error during boost's endianness detection when including AMQP-CPP BEFORE including boost.
Furthermore I think that modifying these macros is illegal (or at least undefined behavior) according to the standard:
https://en.cppreference.com/w/c/language/identifier.html (identifiers starting with an underscore followed by a capital letter or another underscore are reserved for the compiler/standard library/OS vendors).
Expected behavior and actual behavior
Do not modify system defined preprocessor definitions.
Sample code
n\a