Add support for aarch64-apple-darwin

Fix Apple Silicon build (#214)

My previous Apple Silicon build went through, so I thought it already
worked, but it turns out it accidentally built an armv7 build instead.
This actually fixes the Apple Silicon build. One thing to note in
particular is that on Apple Silicong `long double` is the same as
`double` while on Linux `long double` is a 128 bit double-double
format.

Co-authored-by: Elliot Saba <[email protected]>

Export fenv functions on all platforms

Export `fenv` functions on all platforms (#213)

Win32 has been using a hack to switch the `fenv` functions from `static`
to `DLLEXPORT`, we apply that hack to all platforms that do not use a
host `fenv.h`.

Support for more platforms

This release adds support for:

• wasm32 (@minad, @llucinat)
• mips
• s390(x) (@sharcz)
• netbsd (@gufe44)

v0.6.0

Merge pull request #130 from ginggs/enable-optimization-again

Enable optimization again for *int.c and *intf.c

v0.5.5: Merge pull request #162 from JuliaLang/aa/0.5.5

Bump version to 0.5.5

v0.5.4: Merge pull request #146 from twadleigh/dll-a-for-windows

Version bump for Makefile change.

v0.5.3

Bump version for Makefile change.

v0.5.2

BUMP VERSION

Build system fixes

Properly version openlibm library, add build system fixes for a variety of platforms.

v0.5.0: PowerPC support and many small bugfixes and enhancements

Merge pull request #126 from JuliaLang/nl/includes2

More header fixes