move gserialized_gist to libpgcommon

[bnordgren]

I was getting a missing symbol error when attempting to run the raster regressions. lwgeom_pg.c uses utility functions from gserialized_gist.

Also, gserialized_gist uses utility functions from gserialized_gist_nd. The required functions have also been moved to gserialized_gist.

The attached patch applies to r7757, although you may have to manually remove postgis/gserialized_gist.c. Again the problem appears to be the $Id$ string.

[bnordgren]

Applies against r7757

[strk]

Fixing the circular dependency sounds like the solution to the linking puzzle. Committed in r7768 togheter with a reordering of libpgcommon/liblwgeom items in linking lists and cleanups of duplicated symbols in raster module (pg)

[bnordgren]

I believe dustymugs' complaint on the list is related to this ticket, as the gidx stuff seems to be supporting things in this general area. His unresolved symbol only occurs when the build is configured with --with-raster --enable-debug. The symbol in question is gidx_to_string.

[bnordgren]

Applies against r7784

[bnordgren]

attachment:gidx_to_string.patch should fix the missing symbol issue that dustymugs was having when specifying --enable-debug.

[dustymugs]

Patch gidx_to_string.patch committed in r7786