Travis CI: Add mode for "make distcheck"

.travis.sh

@@ -0,0 +1,44 @@
+#! /bin/bash
+#                          __  __            _
+#                       ___\ \/ /_ __   __ _| |_
+#                      / _ \\  /| '_ \ / _` | __|
+#                     |  __//  \| |_) | (_| | |_
+#                      \___/_/\_\ .__/ \__,_|\__|
+#                               |_| XML parser
+#
+# Copyright (c) 2017 Expat development team
+# Licensed under the MIT license:
+#
+# Permission is  hereby granted,  free of charge,  to any  person obtaining
+# a  copy  of  this  software   and  associated  documentation  files  (the
+# "Software"),  to  deal in  the  Software  without restriction,  including
+# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
+# distribute, sublicense, and/or sell copies of the Software, and to permit
+# persons  to whom  the Software  is  furnished to  do so,  subject to  the
+# following conditions:
+#
+# The above copyright  notice and this permission notice  shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
+# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
+# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+# USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+set -e
+
+PS4='# '
+set -x
+
+cd expat
+./buildconf.sh
+
+if [[ ${MODE} = distcheck ]]; then
+    ./configure
+    make distcheck
+else
+    ./qa.sh "${MODE}"
+fi

.travis.yml

@@ -9,6 +9,7 @@ env:
     - CFLAGS='-g -pipe'
   matrix:
     - MODE=address
+    - MODE=distcheck
     - MODE=lib-coverage
 
 addons:
@@ -21,6 +22,4 @@ addons:
       - dos2unix
 
 script:
-  - cd expat
+  - ./.travis.sh
-  - ./buildconf.sh
-  - ./qa.sh ${MODE}