[gspell] build: update autogen.sh

[Sébastien Wilmet <swilmet src gnome org>]

commit 64c06383e0388e2e9cd6d822fb1ab8d9a889f572
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Tue Dec 20 13:17:21 2016 +0100

    build: update autogen.sh
    
    Take the latest version from:
    https://wiki.gnome.org/Projects/GnomeCommon/Migration

 autogen.sh |   19 ++++++++++---------
 1 files changed, 10 insertions(+), 9 deletions(-)
---
diff --git a/autogen.sh b/autogen.sh
index 8a7d049..b6efba6 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,36 +1,37 @@
 #!/bin/sh
 # Run this to generate all the initial makefiles, etc.
-test -n "$srcdir" || srcdir=`dirname "$0"`
+test -n "$srcdir" || srcdir=$(dirname "$0")
 test -n "$srcdir" || srcdir=.
 
-olddir=`pwd`
+olddir=$(pwd)
 
 cd $srcdir
 
 (test -f configure.ac) || {
-       echo "*** ERROR: Directory "\`$srcdir\'" does not look like the top-level project directory ***"
+       echo "*** ERROR: Directory '$srcdir' does not look like the top-level project directory ***"
        exit 1
 }
 
-PKG_NAME=`autoconf --trace 'AC_INIT:$1' configure.ac`
+# shellcheck disable=SC2016
+PKG_NAME=$(autoconf --trace 'AC_INIT:$1' configure.ac)
 
 if [ "$#" = 0 -a "x$NOCONFIGURE" = "x" ]; then
-       echo "*** WARNING: I am going to run \`configure' with no arguments." >&2
+       echo "*** WARNING: I am going to run 'configure' with no arguments." >&2
        echo "*** If you wish to pass any to it, please specify them on the" >&2
-       echo "*** \`$0\' command line." >&2
+       echo "*** '$0' command line." >&2
        echo "" >&2
 fi
 
 aclocal --install || exit 1
 gtkdocize --copy || exit 1
-autoreconf --verbose --force --install -Wno-portability || exit 1
+autoreconf --verbose --force --install || exit 1
 
-cd $olddir
+cd "$olddir"
 if [ "$NOCONFIGURE" = "" ]; then
        $srcdir/configure "$@" || exit 1
 
        if [ "$1" = "--help" ]; then exit 0 else
-               echo "Now type \`make\' to compile $PKG_NAME" || exit 1
+               echo "Now type 'make' to compile $PKG_NAME" || exit 1
        fi
 else
        echo "Skipping configure process."