www/rubygem-url-mount

- Move www/rubygem-url-mount to www/rubygem-url_mount - Add LICENSE

Approved by:	portmgr (blanket)

- Fix trailing whitespace in pkg-descrs, categories [p-x]*

Approved by:	portmgr blanket

Convert USES=gem:autoplist to USES=gem since autoplist is default

create USES=gem and update rubygem- ports to use it

Note that for now ports still have to have USE_RUBY=yes to use USES=gem

PR:		209041
Differential Revision:	https://reviews.freebsd.org/D6070

Remove ${PORTSDIR}/ from dependencies, categories v, w, x, y, and z.

With hat:	portmgr
Sponsored by:	Absolight

Set NO_ARCH for remaining rubygem-* ports with no arch dependent files

Obtained from:  DEVELOPER_MODE
With Hat:       ruby@

Sponsored by:   RideCharge Inc / Curb

Remove all space characters from Makefile assignments.

No functional changes included.

CR:		D193 (except math/sedumi)
Approved by:	portmgr (bapt)

- Stage support

Add NO_STAGE all over the place in preparation for the staging support (cat: www)

- Glue to allow mounted rack applications to know where they're mounted

PR:		ports/163795
Submitted by:	Rodrigo Nicola Lombardo <rodnic@gmail.com>
Reviewed by:	scheidell
Approved by:	maintainer, gabor (mentor)