Merge pull request #1 from rheit/master

Merge branch 'master' of https://github.com/rheit/zdoom
Merge pull request #2 from rheit/master

Merge branch 'master' of https://github.com/rheit/zdoom
Merge pull request #3 from rheit/master

Merge branch 'master' of https://github.com/rheit/zdoom
cl_bloodtype could break playsim sync

Corrected entries were blood would spawn inconsistently because of
cl_bloodtype. Blood now always spawns but is marked invisible according
to cl_bloodtype.
Merge branch 'master' of https://github.com/Edward850/zdoom
- fixed placement and handling of 'allowdecals' for animated doors.
Merge branch 'master' of https://github.com/rheit/zdoom