RFR: 8179367: update use of align, valign attributes in java.base to use style attribute

[Jonathan Gibbons]

Please review the following conceptually simple fix to change use of the 
align and valign attributes in table-related tags to inline style 
attributes in the public doc comments for the contents of java.base module.

This is for compatibility with HTML 5.

The change was done mechanically with the following sed script, which 
was applied to the set of files reported by "javadoc -html5" as 
containing  the use of the align and valign attribute.

s/ align="*left"*/ style="text-align:left"/
s/ align="*center"*/ style="text-align:center"/
s/ ALIGN="*CENTER"*/ style="text-align:center"/
s/ align="*right"*/ style="text-align:right"/
s/ valign="*top"*/ style="vertical-align:top"/
s/ valign="*bottom"*/ style="vertical-align:bottom"/
s/ style="\([^"]*\)" style="\([^"]*\)"/ style="\1; \2"/

The first six lines change the variants of align and valign into the 
corresponding style attributes. And, because there were some instances 
where a tag had both align and valign, the final line of the script 
merges two instances of the style attribute into a single instance.

This covers files in the following packages:

java.base java/io
java.base java/lang
java.base java/lang/reflect
java.base java/math
java.base java/nio/charset
java.base java/text
java.base java/time/chrono
java.base java/time/format
java.base java/util
java.base java/util/concurrent
java.base java/util/regex

JBS: https://bugs.openjdk.java.net/browse/JDK-8179367
webrev: http://cr.openjdk.java.net/~jjg/8179367/webrev/

-- Jon