adding memory checks to automatic test case

.travis.yml

@@ -3,7 +3,7 @@ notifications:
   email: true
 before_install:
  - sudo apt-get update -qq
- - sudo apt-get install -qq build-essential subversion git autoconf libtool texinfo python-lxml
+ - sudo apt-get install -qq build-essential subversion git autoconf libtool texinfo python-lxml valgrind
  - svn checkout svn://svn.code.sf.net/p/check/code/trunk check-code
  - cd check-code
  - autoreconf --install
@@ -12,4 +12,4 @@ before_install:
  - sudo make install
  - sudo ldconfig
  - cd ..
-script: ./autogen.sh && ./configure && make && make check
+script: ./autogen.sh && ./configure && make && make check && cd tests && make check-mem