Log message:
Fix build with latest R.

Log message:
Update all R packages to canonical form.

The canonical form [1] of an R package Makefile includes the
following:

- The first stanza includes R_PKGNAME, R_PKGVER, PKGREVISION (as
  needed), and CATEGORIES.

- HOMEPAGE is not present but defined in math/R/Makefile.extension to
  refer to the CRAN web page describing the package.  Other relevant
  web pages are often linked from there via the URL field.

This updates all current R packages to this form, which will make
regular updates _much_ easier, especially using pkgtools/R2pkg.

[1] http://mail-index.netbsd.org/tech-pkg/2019/08/02/msg021711.html

Log message:
Revbump after cairo 1.16.0 update.

Log message:
Needs libXt and pkg-config to build.

Log message:
graphics/R-Cairo: Import version 1.5.9

Cairo graphics device that can be use to create high-quality vector
(PDF, PostScript and SVG) and bitmap output (PNG,JPEG,TIFF), and
high-quality rendering in displays (X11 and Win32). Since it uses the
same back-end for all output, copying across formats is WYSIWYG. Files
are created without the dependence on X11 or other external programs.
This device supports alpha channel (semi-transparent drawing) and
resulting images can contain transparent and semi-transparent regions.
It is ideal for use in server environments (file output) and as a
replacement for other devices that don't have Cairo's capabilities
such as alpha support or anti-aliasing. Backends are modular such that
any subset of backends is supported.

Packaged by Yorick Hardy for pkgsrc-wip and updated by Kamil Rytarowski.