RFR [8014657] CheckedInputStream.skip allocates temporary buffer on every call

[Ivan Gerasimov]

Hello!

Please have a chance to review a simple change proposal.

CheckedInputStream.skip() allocates temporary buffer on every call.
It's suggested to have a temporary buffer that is initialized on the 
first use and can be reused during subsequent calls to the skip() function.
Many other input streams already use the same approach.

http://cr.openjdk.java.net/~dmeetry/8014657/webrev.0/ 
<http://cr.openjdk.java.net/%7Edmeetry/8014657/webrev.0/>

Sincerely,
Ivan