std.mmfile: Improve error handling

Use wenforce instead of (inappropriately) errno.
Switch from if blocks to scope blocks.
std.mmfile: Fix Windows anonymous mapping creation to conform to MSDN
Merge pull request #2608 from kunalb/patch-2

Correct documentation for anySatisfy
Merge pull request #2506 from CyberShadow/pull-20140909-232228

std.mmfile: Improve error handling
Deprecate std.c.* and move all remaining declarations to core.stdc.*
Usage of WEB macro for License everywhere
Fix incorrect link to zlib
Merge pull request #2337 from joakim-noah/deprecate_std_c

Deprecate std.c.* and move all remaining declarations to core.stdc.*
Merge pull request #2614 from Geod24/fix-license-doc

[DDOC] Usage of WEB macro for License everywhere