Use temp variables to simplify code.
Merge pull request #356 from Dmitry-Me/simplifyCodeWithTempVariables

Use temp variables to simplify code.
Fix compiler warning (and minor cleanup).
Library: Added <minsize> element used for buffer overrun checking
Add some more functions to posix.cfg which allow to enable TestBufferOverrun::buffer_overrun_1_posix_functions
Fix some compiler warnings on MSVC
astyle formatting

[ci skip]
Fixed #5257 (Check memcpy size for string literals)
Fix MSVC compiler warnings
Avoid crash reported in #5943 (using the example from duplicate ticket #5971)
Replace a few size_t/unsigned int by std::size_t
astyle formatting

[ci skip]
ValueFlow: Cleanup code by using SymbolDatabase provided scope info
Fixed #5968 (False positive: 'Possible null pointer dereference' when checking null in negated conjuction)
Attempt to fix 2 Coverity messages.
Replace a few unsigned int by std::size_t
astyle formatting

[ci skip]
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]
Remove multiple newlines.

[ci skip]
Remove duplicate semicolons.