add lcov to travis file

.travis.yml

@@ -4,3 +4,7 @@ install:
 script: autoreconf -if && ./configure --enable-code-coverage && make && make check
 after_success:
   - coveralls
+env:
+  apt:
+    packages:
+	  - lcov

configure

@@ -2159,6 +2159,8 @@ ac_configure="$SHELL $ac_aux_dir/configure"  # Please don't use this var.
 
 
 
+
+
 am__api_version='1.14'
 
 # Find a good install program.  We prefer a C program (faster),