Fixed a few build files.

test cases/6 linkshared/builder.txt

@@ -1,7 +1,5 @@
 project('shared library linking test', 'c')
-lib = shared_library('mylib', 'libfile.c')
+lib = shared_library('mylib', 'libfile.c', install : true)
-exe = executable('prog', 'main.c')
+exe = executable('prog', 'main.c', link_with : lib, install : true)
-exe.link(lib)
+
-lib.install()
-exe.install()
 add_test('runtest', exe)