Fixed #6024 (False positive (nullPointer) using in 1.66)
travis: clang: check test/CodeGenCXX/mangle-alias-template.cpp, it no longer makes cppcheck crash.
Travis: Suppress variableScope warnings in our test cases. These are FP so should be fixed asap.
Continue early to omit unneeded operations
Refactorization:
- Added missing separating comments between checks in checkother.cpp
- Moved checks related to strings into own file
run dmake
Merge pull request #408 from Dmitry-Me/continueEarlyToOmitUnneededActions2

Continue early to omit unneeded operations
Fixed #6086 (False positive: valueFlow, conditional code returns)
ValueFlow: relocate test
astyle formatting
ValueFlow: Fix crash for lambda function
#6100 False positive nullPointer - calling mbstowcs(NULL,). wcstombs has also been fixed
Add VS2013 projects for my personal use (using /LTCG, /MP, /RELEASE, /MT).

[ci skip]
Add a script to run coverity with VS2013.

[ci skip]
Move astyle options to astyle.ini.

This way we can use it in runastyle and runastyle.bat.

Settings changes:
* specify the files to exclude instead of specifying the files to style
* remove `--lineend` option
* keep the file's modified timestamp
* only show the styled files on the command output

Also change the astyle version check to only check for older not the exact version.

[ci skip]
Update runastyle.bat from MPC-HC.

It includes a check if astyle is present and for astyle's version.
Also, it allows drag and dropping files onto it to style them.

[ci skip]
PEP8 fixes.