delete_module/delete_module01.c: cleanup

* Delete some useless commtents.
* Use SAFE_* macros.
* Some cleanup and fixes.

Signed-off-by: Xiaoguang Wang <wangxg.fnst@cn.fujitsu.com>
Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
delete_module/delete_module02.c: cleanup

* Delete some useless commtents.
* Use SAFE_* macros.
* Some cleanup.

Signed-off-by: Xiaoguang Wang <wangxg.fnst@cn.fujitsu.com>
Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
delete_module/delete_module03.c: cleanup

* Delete some useless commtents and fix some.
* Use SAFE_* macros.
* Some cleanup.

Signed-off-by: Xiaoguang Wang <wangxg.fnst@cn.fujitsu.com>
Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
module/delete_module: make delete_module tests run default

module/delete_module/Makefile: make some fixes to conform to
module compile in kernel 2.6 series and higher

testcases/kernel/Makefile: make it include module test

Signed-off-by: Xiaoguang Wang <wangxg.fnst@cn.fujitsu.com>
Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>