Fix broken CTS test

The fix is in test_isJavaIdentifierPartC() and reverses
the assertion for Character.isJavaIdentifierPart('\u200b')
from false to true. The test method below it
(isIdentifierPart(int)) was already asserting this and
the behavior has been confirmed against the RI.

Other changes made:

Uncommented some assertions that now pass, removed unnecessary /
incorrect comments, added missing braces, some reformatting to 100
chars to improve readability, removed empty lines at the beginning of
methods . Converted all assertTrue(msg, !condition); to
assertFalse(msg, condition).

Bug: 13748395

(cherry picked from commit 2a025c1955e9fccac12587c019f3ae82ff5505c3)

Change-Id: I18ac7d2b0b8f87d4a13cb32113bbea1abe691a4a
1 file changed