avoid (deprecated) Java.java_to_ruby use JavaUtil.convertJavaToRuby
when wrapping java.sql.Connection object into a Ruby object ...
re-arranged code to have code that sets connection on one place
add some (probably redundant) synchronization + arjdbc.disconnect.debug
for attempting to detect when connection is (closed and) set to null - this should be removed once #197 #198 are closed
backport History.txt for 1.2.7
sqlserver adapter code cleanup + refactored (ArJdbc::) MsSQL -> MSSQL
[mssql] run more tests, change default constrain sql on 2005+ (closes #320)
remove a few quoting methods (implemented in Java) + some more cleanup
adding a :connection_alive_sql test