Revert "CodeCoverage: OpenCover 4.5.2506 Binaries"

This reverts commit f5617feca4e0ab3219e13ed23f9a8cf948d38277.
Revert "CodeCoverage: Next OpenCover.Framework.dll"

This reverts commit 97a0122ef378b7332137d6349db6d4d64826d8de.
CodeCoverage: OpenCover 4.5.2506 Binaries

https://github.com/OpenCover/opencover/releases/tag/4.5.2506
CodeCoverage: FileID/Document SequencePoint Attrs

Fixing [CodeContractClass/For] using SequencePoint fileid/url XML
attributes
CodeCoverage: Use new OpenCover attributes

Now is simpler/cleaner to find start/final SP
Remove obsolete methods & code
CodeCoverage: CCMethod FileID and SequencePoints

CodeCoverageMethod:
New method property .FileID
Filter Visited & Unvisited SP by Method.FileID
CodeCoverage: CCControl SequencePoint filter

CodeCoverageControl: Do not show SequencePoints from another file
CodeCoverage: Remove obsolete BranchPoint code
CodeCoverage: Null reference fix, remove Debug ...

CodeCoverageMethodElement:
Null reference thrown because Tests does not contain new attributes,
fixed.
Debug.Fail breaks Test, removed.
CodeCoverage: Test
CodeCoverage: Applied SD5 suggestions
CodeCoverage: Tests
CodeCoverage: OpenCover 4.5.2506 Binaries

https://github.com/OpenCover/opencover/releases/tag/4.5.2506
Merge branch 'master' of https://github.com/ddur/SharpDevelop
Merge remote-tracking branch 'origin/master' into dd.NextOpenCover