Add manual page for `freetype-config'.
Contributed by Nis Martensen <nis.martensen@web.de>.

* docs/freetype-config.1: New file.

* builds/unix/unix-def.in (mandir): Define.
* builds/unix/install.mk (install, uninstall): Handle manpage.
diff --git a/docs/freetype-config.1 b/docs/freetype-config.1
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+.TH FREETYPE-CONFIG 1 "December 2013" "FreeType 2.5.2"
+.
+.
+.SH NAME
+.
+freetype-config \- Get information about a libfreetype installation
+.
+.
+.SH SYNOPSIS
+.
+.B freetype-config
+.RI [ options ]
+.
+.
+.SH DESCRIPTION
+.
+.B freetype-config
+returns information needed for compiling and linking programs with the
+FreeType library, such as linker flags and compilation parameters.
+.
+Alternatively, it can be used to query information about the
+FreeType library version installed on the system, such as the
+installation (directory path) prefix or the FreeType version number.
+.
+.PP
+This program is part of the FreeType package.
+.
+.
+.SH OPTIONS
+.
+There are two types of options: output/display selection options, and
+path override options.
+.
+.
+.SS Output selection options
+.
+Only one of the output selection options should be given at each program
+invocation.
+.
+.TP
+.B \-\-prefix
+Return the prefix value of the installed FreeType library (the default
+prefix will be `/usr' in most cases for distribution-installed
+packages).
+.
+.TP
+.B \-\-exec-prefix
+Return the executable prefix value of the installed FreeType library
+(will often be the same as the prefix value).
+.
+.TP
+.B \-\-ftversion
+Return the FreeType version number.
+.
+.TP
+.B \-\-version
+Return the `libtool version' of the FreeType library.
+.
+.TP
+.B \-\-libtool
+Return the library name for linking with libtool.
+.
+.TP
+.B \-\-libs
+Return compiler flags for linking with the installed FreeType library.
+.
+.TP
+.B \-\-cflags
+Return compiler flags for compiling against the installed FreeType library.
+.
+.
+.SS Path override options
+.
+These affect any selected output option, except the libtool version
+returned by `--version'.
+.
+.TP
+.BI \-\-prefix= PREFIX
+Override `--prefix' value with
+.IR PREFIX .
+.
+.TP
+.BI \-\-exec-prefix= EPREFIX
+Override `--exec-prefix' value with
+.IR EPREFIX .
+.
+.
+.\" eof