Results for console tab-completion are now color-coded. CCMDs appear blue, CVars green and aliases red.
- used TEXTCOLOR_ #defines for colorizing CCMD list, remove use of strbin1.
- Fixed: crash when closing ZDoom in the save menu and a memory leak.
- Be clear about the safe 'memset/memcpy' operations on virtual classes.

Since I remember that 'memset/memcpy' is safe in this code, it should be okay to cast to the generic pointer all the 'virtual class' arguments before calling the above functions. Shuts up Clang warnings.
- Be more compatible with C++11 narrowing conversions system.
- reorganization of automap color handling for easier maintenance

Mostly preparation to implement a per-mod automap option but also fixes a few minor issues with some colors that are not defined in the original game specific colorsets.
- ovthingcolors were not properly set.
- added all the missing color CVARs for the overlays which previously duplicated use of one of the other CVARs.
- Ignored dehacked.exe from *.zip files to enable loading of *.deh files.
- implemented automap color parser for MAPINFO (code not tested yet!)
- fixed typo in MENUDEFS.
Merge branch 'automap_colors'
Merge branch 'master' of https://github.com/rheit/zdoom
- Fixed P_CheckMapData allowed non-map lump names to pass resulting in a crash when actually trying to load the map.
- Fixed: Disable ifitem jumping if a link isn't specified since an invalid value can cause a crash.
Merge branch 'maint'
Merge branch 'master' of https://github.com/rheit/zdoom
- added custom automap overlay colors.
- extended am_drawmapback so that map backgrounds can only be drawn if used with custom colorsets and Raven's, assuming that these sets were specifically made for the accompanying backgrounds.
- added 3 more modes for am_cheat: 4-6 are the same as 1-3 with the exception that lines not drawn on the regular automap won't be shown.
- fixed: The sector's 'hidden' UDMF property did not properly clear the corresponding flag if the value was 'false'.
- added UDMF 'waterzone' property for sectors.
Merge branch 'maint' of https://github.com/rheit/zdoom into maint