Change comments from Japanese to English

Change comments from Japanese to English

    There are some Japanese comments in RC1,
    change these to English.

    [Patch Sets 2]
    Split CMakeLists.txt due to modification in another commit.

    [Patch Sets 3]
    Update commit message.

    [Patch Sets 4]
    Return to Patch Sets 1 to rebase for this commit.
    <Delete libhomescreen from this gerrit repository>

    [Patch Sets 5]
    Return to Patch Sets 3 to rebase for this commit.
    <Modify library name in CMakeLists.txt>

Change-Id: Ib520d39ede23cb0059f303c6e38090c9ed65a45b
Signed-off-by: zheng_wenlong <wenlong_zheng@nexty-ele.com>