add /proc/fs_cache to display vnode, path cache, page cache.
also change some bad virable name

close: #I3WESD
Signed-off-by: Nmucor <mucorwang@gmail.com>

1.remove redundant headfile in kernel, such as:
  compiler.h;debug.h;automount.h;inode.h;syslog.h;net.h;
2.split fs.h to file.h and driver.h
3.move vnode.h and path_cache.h to vfs/include
4.remove redundant interface and defines

close: #I3RTNR
Signed-off-by: Nmucor <mucorwang@gmail.com>

rename function OsCreateUserVmSpace to fix typo

close https://gitee.com/openharmony/kernel_liteos_a/issues/I3QD42Signed-off-by: kenneth <459864689@qq.com>

support turn off as many features as possible.
current only libc and posix and bsd can not be turned off.
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I1e97570c67593207a56dc11f357eca4b4a018bfd

close: #I3I768

Change-Id: I4f801df4abe1a9afdf43391c28276e96a5e81513

Close #I3OAFR

Change-Id: I25b14572809b6fabb9e9d17de89a99047c02a59b

Change-Id: Id75a1b146766f448838afc80ad11cfd9d990e94e

Change-Id: Iecd1a896f92522ecc75d099c23761969a83b1d29

Change-Id: I8662952ac9d7912aaf2e2e72f779b3def41d14c4

Close #I3OAFR

Change-Id: Icea238e20adf402d0ec1fc7e47ff4e58124a5e83

Change-Id: I626a96376fe6bee69b10ee9b56495d62849c19b7

Change-Id: I052d930d54e63179b17b77f02c107a015f3cfc3f

Change-Id: I8d2e9f96e86f4130474da9898791240b5d42328e

Description:Fix related interface competition issues.
Sig:liteos_a
Feature or Bugfix:Bugfix
Binary Source:No

Change-Id: I1198408be9ce577bbf0735e3da53d0834622f429

Change-Id: Ie48b96fe9c8ab036d7234b56a169d6668171a895

Change-Id: I5ca037ef20eb65578b804e314617953bfbf6c35b

Description:Delete VM to support only kernel mode.
Sig:liteos_a
Feature or Bugfix:Feature
Binary Source:No

Change-Id: Ie1029c8fbc0c1b85c138663933118d2d148b7769

Change-Id: I608a6e18aad240c52398d744191f6df4bdd68cb5

Feature or Bugfix:Feature
Binary Source:Huawei
PrivateCode(Yes/No):Yes

Change-Id: I175d2648bc6f9078c34de2c0a5c93fda10b86c47
ChangeID:13306388

Change-Id: Id7765f13d15014c8b19b75156b9f5971cbe99705

Reviewed-by: zhangfanfan

修改region相关：优化OsVmRegionSplit红黑树节点操作，修改OsVmRegionAdjust起始地址不在region时的行为，修复OsIsRegionCanExpand计算错误，更正几处typos

Change-Id: Ia6c1f6302407a707b3ec9b805f4c92d8a7970b86