Further resolve CID 1222223
Resolve CID 1132030
Fixed #6044 (hang: darkplaces / cl_particles.c)
Dead pointer: Fixed FP for subfunction pointer argument
Merge pull request #393 from Dmitry-Me/furtherResolve1222223

Further resolve CID 1222223
Merge pull request #394 from Dmitry-Me/resolve1132030

Resolve CID 1132030
Some safe coding. Check that pointer is not null.
runastyle: remove trailing spaces in cfg files
astyle formatting
Fixed #5557 (astIsFloat: better handling of '.')
Resolve CID 1037101. break after loop if tok is null because tok is dereferenced below. Ticket: #6055
null pointer: perform proper null pointer checking when no --enable=warning is given.
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.