s390x Support

[AlvinChacko]

Im trying to build an angular app on z/OS and it looks like @angular/[email protected] uses lmdb. Lmdb doesnt build on z/OS or have that support wondering if I can avoid installing lmdb or if there is way to port lmdb for s390x. Here is what I see:

npm ERR! In file included from ../src/lmdb-js.cpp:1:
npm ERR! ../src/lmdb-js.h:101:12: fatal error: 'byteswap.h' file not found
npm ERR!   #include <byteswap.h>  // bswap_64
npm ERR!            ^~~~~~~~~~~~
npm ERR! 3 warnings and 1 error generated.
npm ERR! make: *** [lmdb.target.mk:195: Release/obj.target/lmdb/src/lmdb-js.o] Error 1
npm ERR! gyp ERR! build error 
npm ERR! gyp ERR! stack Error: `make` failed with exit code: 2