Bug#887601: libcamlimages-ocaml: Detect freetype using pkg-config

[Hugh McMaster <hugh.mcmaster@outlook.com>]

Package: libcamlimages-ocaml
Version: 1:4.2.0-1.1+b3
Severity: important

Dear Maintainer,

The next version of libfreetype6-dev will *not* ship the 'freetype-config'
script.

Please use pkg-config to detect the freetype headers and libraries instead.

Thank you



-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.14.0-3-amd64 (SMP w/1 CPU core)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE=en_AU:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages libcamlimages-ocaml depends on:
ii  libc6                                        2.26-4
ii  libfreetype6                                 2.8.1-1
ii  libgif7                                      5.1.4-1
ii  libjpeg62-turbo                              1:1.5.2-2+b1
ii  liblablgtk2-ocaml [liblablgtk2-ocaml-il3k6]  2.18.5+dfsg-1+b1
ii  libpng16-16                                  1.6.34-1
ii  libtiff5                                     4.0.9-3
ii  libx11-6                                     2:1.6.4-3
ii  libxpm4                                      1:3.5.12-1
ii  ocaml-base [ocaml-base-4.05.0]               4.05.0-10
ii  ocaml-base-nox [ocaml-base-nox-4.05.0]       4.05.0-10
ii  zlib1g                                       1:1.2.8.dfsg-5

libcamlimages-ocaml recommends no packages.

libcamlimages-ocaml suggests no packages.

-- no debconf information