* removed redundant skill_ganbatein() function
* Added flag UF_PATHCHECK from jAthena which affects whether a skill's cells will be affected by the surrounding terrain. Adjusted existing flags so that they closely match jA's (for easier comparisons).
* Fixed code that allowed placing of skill unit cells on 'gaps'.
* Fixed code that prevented successful casting of land skills on 'gaps' (officially it's possbile, even though they will not deploy entirely).
git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@12331 54d463be-8e91-2dee-dedb-b68131a5f0ec
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