Use [], not at() when the index is guaranteed to be valid.
htmlreport: if no arguments are passed, print --help output; when done generating the report, print where index.html is (take report_dir into account).
htmlreport: don't crash when pygments fails to determine filetype of a file we want to highlight. This happens for files with no extension (for example "foo" instead of "foo.c").
htmlreport: on the index page, print stats of which warning ID occured how often.
Merge pull request #372 from Dmitry-Me/dontUseArrayAtWhenItWouldntThrow

Use [], not at() when the index is guaranteed to be valid.
Cache option flags and check them first.
Merge pull request #373 from Dmitry-Me/cacheOptionFlagsAndCheckThemFirst

Cache option flags and check them first.
Use temp variables to avoid repeated actions in code.
Merge pull request #374 from Dmitry-Me/useTempVariablesToAvoidRepeatedActions

Use temp variables to avoid repeated actions in code.
Resolve CID 1214637.
Merge pull request #376 from Dmitry-Me/resolveIssue1214637

Resolve CID 1214637.
Bring declarations closer to where they're needed.
htmlreport: stats: sort primary by occurrences but if several IDs occur equally often, sort them alphabetically.
Merge pull request #377 from Dmitry-Me/bringDeclarationsCloserToWhereTheyreNeeded

Bring declarations closer to where they're needed.
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.