re-interrupt the current thread, in order to restore the thread's interrupt status.

[xiangyushawn]

for issue #196

[codecov-io]

Codecov Report

Merging #204 into dev will decrease coverage by 0.14%.
The diff coverage is 75%.

@@             Coverage Diff              @@
##                dev     #204      +/-   ##
============================================
- Coverage     32.89%   32.75%   -0.15%     
+ Complexity     1435     1429       -6     
============================================
  Files            97       97              
  Lines         23359    23387      +28     
  Branches       3881     3889       +8     
============================================
- Hits           7684     7660      -24     
- Misses        14138    14183      +45     
- Partials       1537     1544       +7

Flag	Coverage Δ	Complexity Δ
#JDBC41	32.68% <75%> (-0.1%)	1426 <0> (-2)
#JDBC42	32.69% <75%> (-0.14%)	1429 <0> (-3)

Impacted Files	Coverage Δ	Complexity Δ
...om/microsoft/sqlserver/jdbc/SQLServerBulkCopy.java	44.91% <100%> (-0.11%)	181 <0> (-2)
...in/java/com/microsoft/sqlserver/jdbc/IOBuffer.java	36.25% <100%> (-0.16%)	0 <0> (ø)
.../microsoft/sqlserver/jdbc/SQLServerConnection.java	40.15% <50%> (+0.05%)	204 <0> (ø)	⬇️
...a/com/microsoft/sqlserver/jdbc/PLPInputStream.java	33.13% <0%> (-1.19%)	23% <0%> (-1%)
...oft/sqlserver/jdbc/SQLServerParameterMetaData.java	19.78% <0%> (-1.11%)	27% <0%> (ø)
...m/microsoft/sqlserver/jdbc/SQLServerResultSet.java	23.27% <0%> (-1.06%)	165% <0%> (-10%)
...t/sqlserver/jdbc/SQLServerConnectionPoolProxy.java	12.62% <0%> (ø)	12% <0%> (ø)	⬇️
...a/com/microsoft/sqlserver/jdbc/ParameterUtils.java	62.22% <0%> (+15.55%)	19% <0%> (+7%)	⬆️

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[v-nisidh]

Can we come up some JUnit test case for testing this?
I am referring to original problem.

Encountered a situation where a piece of code was calling cancel(true) on a future runnable but upon inspection Thead.currentThead().isInterrupted() was returning false inside the runnable