attempting to get mongo meta driver to work with 1.0.2 mongo c drivers

updating .gitmodules

adding META_DRIVER flag to Makefile.meta

fixing bson_iterator type reference

fixing BSON error reporting

adding readPreference support

forgot to change header file

fixing more reference to mongo_get_connection using readPreference)

fixing option for read_preference

fixing includes

fixing includes

removing submodule for meta driver in favor of pkg-config

fixing legacy driver iter methods

fixing string iterator

fixing regex iter

fixing code iter type

fixing missing method for meta driver

fixing binary iterator

fixing JsonDump

fixing method signature

fixing binary iterator

fixing BsonAppendBinary

setting slaveOk=true for when readPreference is provided

fixing readPreference

fixing SLAVE_OK

forgot to delete some unused code

trying to fix collection count

patch to make count be able to read from slave

fixing count method references

trying to fix count method

still tring to work around mongo driver bugs

still struggling

still struggling

sigh

finally!

getting rid of some useless stuff

Adding documentation for installing meta driver

Fixing formatting
Merge branch 'squashed_meta'