merge safe fixes from default.  physfs include order, tips file length check, server checker fixes, shoppa border fix, land drawing optimisations, physfs off by 1 (probably unused by us), rubber svg image

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branch : 0.9.20
move CMAKE_Pascal_FLAGS_* flags after enabling the Pascal language or they get overwritten

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branch : 0.9.20
missed this in the merge. rejected the uGearsHandlersMess changes thinking they were all desyncing, but there was the function rename from uLandGraphics

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branch : 0.9.20
switch every optimization from Os to O2

Also move 'disable optimizations' in the internal pascal file for debug mode.

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branch : 0.9.20
merge from .20 again
Added tag 0.9.20-release for changeset af0520a6bf00