Falling rocks fix

This fixes the rock spawners' rocks not being removed if they rolled down to the ground from a slope rather than bouncing (see https://mb.srb2.org/showthread.php?t=41963)

Added 1 new commit:

• 9a2b7b20 - Better plan, use ?: for deciding between floorz/ceiling checks based on gravity

always love me a good ternary

Added 36 new commits:

• f9b41898 - Don't allow skipping stats in record attack/nights attack
• 9b737d11 - Merge branch 'record-attack-custom-exit-fix' into 'next'
• 0f014fe2 - Merge branch 'master' into next
• cb98c2d9 - Merge branch 'master' into next
• 8f4f8c6e - Merge branch 'master' into next
• 3212ee0b - Fix endless loop of R_DrawRepeatMaskedColumn if both sprtopscreen and sprbotscre…
• 66a45c65 - Merge branch 'td-render-fix' into 'master'
• 72bd3e28 - Fix sprtopscreen from getting integer overflows once and for all in R_DrawRepeatMaskedColumn
• 823aa7d2 - Merge branch 'td-render-fix2' into 'master'
• dc249c6c - D_ModifierKeyResponder now checks for ev_console as a "key down" event
• 591fe13c - Merge branch 'dedicated-console-fix' into 'master'
• b0f4bbb4 - Played TD's Stormy Streets enough to know precipitation sprites didn't get an ov…
• 5019077f - Merge branch 'precip-overflow-fix' into 'master'
• 2823c7bf - build: fixup warnings from GCC 6.2.1
• b22417bc - appveyor: buildbot now using GCC 6.3, not 5.3
• e0b2a4a7 - build: add suport for GCC 6.3
• b01d5da6 - build: fixup GCC54 endif
• 42ecca81 - build: disable tautological-compare and logical-op
• 81fe4621 - build: do not overwrite the -Wno-error switchs
• 6bb7a636 - appveyor: output commands passed to GCCwq
• 9cac1e9e - build: fixup WFALGS/WFLAGS mistake
• 4e8972cd - build: no warning or error about logical-ip or tautological-compare
• 538eac7a - appveyor: disable command output
• b29193aa - CircleCI: first try
• 59d91e07 - build: r_bsp.c:213:23: warning: inlining failed in call to 'R_DoorClosed': call …
• c5d15ad5 - CircleCI: force -Wno-unsuffixed-float-constants
• ade354c2 - CircleCI: error on warnings
• aaaab40f - CircleCI: cache APT and ccache
• c85c277a - CircleCI: move GCC49 check to debian's env
• 99b2c888 - README: add CircleCI's Status badge
• ac75267e - CircleCI: build on Ubuntu as well
• 29c19b62 - CircleCi: Ubuntu docker image is broken
• 03ecb0d1 - CircleCI: add upx
• 52a79754 - CircleCI: keep build cache with checksum of depend.dep
• 2d68cb77 - Merge branch 'master' into next
• 0ffc0f19 - Merge branch 'next' into falling-rocks-fix

+1

Status changed to merged

mentioned in commit e03577d9