npm: fix node and npm default directory conflict
Fixes [YOCTO #13349]
When dealing with node modules which have declared "bin" files [1], npm
will create a link in '/usr/bin' with a relative link to
'../lib/node_modules/<module bin file>'.
The commits
e9270af4296ce2af292059617a717e42fc17425c and
2713d9bcc39c712ef34003ce8424416441be558e explicitely use
'/usr/lib/node/' as install directory, but does not care about the "bin"
symbolic linked files.
In order to keep valid links, and to keep it as simple as possible, the
path '/usr/lib/node_modules/' is used as install directory for npm. And
a symbolic link is created to have a valid '/usr/lib/node/' path, needed
for node.
[1]: https://docs.npmjs.com/files/package.json#bin
Signed-off-by: Jean-Marie LEMETAYER <jean-marie.lemetayer@savoirfairelinux.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>