(cherry picked from commit ad6d78f2)

* fix warnings and errors in test compiles with BUILD_SHARED_LIBS

* did requested changes and added one change to allow all tests to succeed
in windows DLL

(cherry picked from commit 79f11dba)

Each instantiation of ArgArray template uses sizeof operator, which
returns a std::size_t value. GCC 7.1 warns about invalid conversion
(error: conversion to ‘unsigned int’ from ‘long unsigned
int’ may alter its value [-Werror=conversion]).

(cherry picked from commit e14bac62)

(cherry picked from commit 0284a289)

(cherry picked from commit 07ed4215)

(cherry picked from commit c56d3459)

Fixes #505.

(cherry picked from commit 52aabbe7)

(cherry picked from commit 4423490d)

(cherry picked from commit cc736e76)

(cherry picked from commit db0d54f8)

(cherry picked from commit e208fbff)

When using the NDK 13b toolchain standalone or with CMake, ANDROID is not defined,
but __ANDROID__ is defined instead.

(cherry picked from commit bc6af754)

(cherry picked from commit 9e9ad57f)

Managed C++ code doesn't have the _BitScanReverse* intrinsics, we must use the fallback code for count_digits etc.

(cherry picked from commit a2596d68)

(cherry picked from commit b9aaa507)

(cherry picked from commit fac55463)

(cherry picked from commit 796beaad)

(cherry picked from commit def68746)

(cherry picked from commit f5b1c16e)

# Conflicts:
#	CMakeLists.txt

(cherry picked from commit cfd00af3)

(cherry picked from commit 62744019)

# Conflicts:
#	fmt/printf.h
#	test/string-test.cc

(cherry picked from commit 8cef95f7)

(cherry picked from commit 922ae489)

(cherry picked from commit 05ba3e78)

(cherry picked from commit 1daddec1)

# Conflicts:
#	fmt/printf.h
#	fmt/string.h
#	fmt/time.h

(cherry picked from commit d8867a2b)

Fixes #413.

(cherry picked from commit 6c012578)

(cherry picked from commit 49ccb2e4)

(cherry picked from commit 7ce7def5)

(cherry picked from commit 8f455c10)

(cherry picked from commit 15d0f327)

(cherry picked from commit 8c63ea43)

(cherry picked from commit abbefd71)

Remove unnecessary "fmt/" prefix which should be maintained with additional include_directories() in each project. (#397)

(cherry picked from commit 1500f005)

(cherry picked from commit cee50b75)

(cherry picked from commit 9ec3bea2)