malloc: Add memalign test.

ChangeLog:

2013-10-04  Will Newton  <will.newton@linaro.org>

    * malloc/Makefile: Add tst-memalign.
    * malloc/tst-memalign.c: New file.
malloc/tst-posix_memalign.c: Tidy up code.

Add some comments and call free on all potentially allocated pointers.

ChangeLog:

2013-10-04  Will Newton  <will.newton@linaro.org>

	* malloc/tst-posix_memalign.c: Add comments.
	(do_test): Add comments and call free on all potentially
	allocated pointers. Add space after cast.
malloc/tst-pvalloc.c: Tidy up code.

Add some comments and call free on all potentially allocated pointers.
Also remove duplicate check for NULL pointer.

ChangeLog:

2013-10-04  Will Newton  <will.newton@linaro.org>

	* malloc/tst-pvalloc.c: Add comments.
	(do_test): Add comments and call free on all potentially
	allocated pointers. Remove duplicate check for NULL pointer.
	Add space after cast.
malloc/tst-valloc.c: Tidy up code.

Add some comments and call free on all potentially allocated pointers.
Also remove duplicate check for NULL pointer.

ChangeLog:

2013-10-04  Will Newton  <will.newton@linaro.org>

	* malloc/tst-valloc.c: Add comments.
	(do_test): Add comments and call free on all potentially
	allocated pointers. Remove duplicate check for NULL pointer.
	Add space after cast.