Shapely mismatchs with system geos library when geos-3.7  #651

I am developing a project which uses both Shapely and libgeos, I create shapes with 'shapely', pass with Cython to C++ library and process them with 'libgeos' in C++.

##Description of the issue

After last libgeos upgrade I had this trouble:

Shapely install by its own 2 files in this path:

ls <my_path>lib/python3.7/site-packages/shapely/.libs
libgeos-3-6a255356.6.2.so
libgeos_c-bd8d3f16.so.1.10.2

thess files override the system libgeos:
geos-config --version
3.7.0

and cause segfault like this:
Thread 1 "python" received signal SIGSEGV, Segmentation fault. 0x00007fffea6abe78 in vtable for _cxxabiv1::_class_type_info () from /usr/lib/libstdc++.so.6
(gdb) bt

#0 0x00007fffea6abe78 in vtable for _cxxabiv1::_class_type_info () from /usr/lib/libstdc++.so.6

#1 0x00007fffd717a0e2 in geos::geom::LineString::apply_rw(geos::geom::CoordinateSequenceFilter&) () from /home/cocco/.virtualenvs/dense_project/lib/python3.7/site-packages/shapely/.libs/./libgeos-3-6a255356.6.2.so

#2 0x00007fffd717d66d in geos::geom::Polygon::apply_rw(geos::geom::CoordinateSequenceFilter&) () from /home/cocco/.virtualenvs/dense_project/lib/python3.7/site-packages/shapely/.libs/./libgeos-3-6a255356.6.2.so

#3 0x00007fffd27f8f84 in geos::geom::util::ComponentCoordinateExtracter::getCoordinates(geos::geom::Geometry const&, std::vector<geos::geom::Coordinate const*, std::allocator<geos::geom::Coordinate const*> >&) () from /usr/lib/libgeos-3.7.0.so

#4 0x00007fffd27fc6c5 in geos::geom::prep::BasicPreparedGeometry::BasicPreparedGeometry(geos::geom::Geometry const*) () from /usr/lib/libgeos-3.7.0.so

Steps to reproduce the problem.

I have not been able to reproduce the problem in OSX, the problem arises when Shapely install those files and the system version is not 3.6x.

Operating system

I am running Arch Linux but installing in virtualenv via pip

Shapely version and provenance

'1.6.4.post2' installed from PyPI using pip