Basically, we need to search for libs in another directory.
…rmat's name rather than driver
…installing (after libtool switch this was no more possible)
this change breaks the line_short_gap autotest, which is expected as the fix was specifically aimed at centering offset symbols. @havatv : Not sure what the documentation says about this, but it should probably be made very clear that this is a caveat.
proj 4.8 supports proj contexts which prevent from placing a mutex around calls to pj_transform. @warmerdam suggested we should create a context fro each thread, which is correct. In practice we do not support multiple threads accessing a mapfile concurrently, so this should not be an issue here. (mapObjs obtained through msCopyMap() will have a different proj context assigned).