Fixed skill flagging (mostly related to SKILL_FLAG_REPLACED_LV_0 )

Adjusted value as to not conflict with the perm_granted flag
Special Thanks to Wildcard, malufett.
Also made pc_skillup rely on the change_level_2nd/3rd vars instead of hardcoded values, and added a pc_gainexp packetver check that'd otherwise cause map server warnings when within the range.

Signed-off-by: shennetsind <ind@henn.et>
Merge branch 'master' of https://github.com/HerculesWS/Hercules into ghbb
For Report #7333

Added official 'this item cannot be used within this area' response
http://hercules.ws/board/tracker/issue-7333-map-zone-db/
Special Thanks to kyeme

Signed-off-by: shennetsind <ind@henn.et>
Fixed Bug #7633

unitskillusepos/unitskilluseid script commands werent functioning because the npc's status weren't properly measured.
Special Thanks to purityz
http://hercules.ws/board/tracker/issue-7633-unitskillusepos-unitskilluseid/

Signed-off-by: shennetsind <ind@henn.et>
Enabled Pre-Renewal builds in the CI buildbot

Both Renewal and Pre-Renewal branches will now be built and tested.

Signed-off-by: Haru <haru@dotalux.com>
Merge branch 'master' of https://github.com/HerculesWS/Hercules into ghbb
Merge branch 'master' of https://github.com/HerculesWS/Hercules into ghbb
阵营战同公会可攻击。