- Update list of dependencies

Release changes:	https://asymptote.sourceforge.io/ChangeLog
Reported by:	portscout!

Approved by:	portmgr (blanket)

There were 2 breaking problems:
* missing 'gc.h': backport the upstream patch to fix it
* Boost issues: disabled the module lsp that had these issues.
  Had to update version because lsp wasn't disableable previously.

Approved by:	portmgr (unbreak)

- Enable test target

===> Checking for items in pkg-plist which are not in STAGEDIR
Error: Missing: share/info/asy-faq.info

- Bump PORTREVISION

After a discussion on the mailing list on moving manpages to
${PREFIX}/share/man for consistency with base where it is
installed in usr/share/man, it appeared the same should happen
to GNU info files which were installed under share in base and
not in ports.

Now texinfo is not in base on any of the supported version of FreeBSD
it is possible to proceed to this move and it is easier to do than
the manpage change.

Other benefit than consistency are less patching: all build tools but
cmake are expecting info files to be under share/info and cmake (patched here)
was having an exception for BSD so the patch makes FreeBSD case less
specific for them

Bump revision of all impacted ports

PR:		232907
exp-run by:	antoine
Differential Revision:	https://reviews.freebsd.org/D17816

- Register the missing dependencies for USE_GL
- Add BDWGC (enable Boehm-Demers-Weiser garbage collector) option. At the moment, it is disabled by default to fix build on CURRENT and avoid breaking the interactive mode on 10.4
- Add USES=compiler:c++14-lang to fix segfault with 3D examples
- Use readline from ports
- Sort Makefile and cosmetic fixes
- Silence a explictly called command

Changelog: http://asymptote.sourceforge.net/ChangeLog

PR:		228667
Submitted by:	cpm
Approved by:	nivit (maintainer timeout, 2 weeks)
MFH:		2018Q2

- Bump PORTREVISION