Add non-verbose mapReduce support
Add oplogReplay option to cursors.

This turns on the undocumented Mongo option which uses a more efficient
search for collections containing "ts" fields.

Fix the spelling of QueryCommand.OPTS_OPLOG_REPLAY.
Edited Grammatical Errors in "Acknowledge"
grammatical errors
Corrected optional arguments documentation

According to the code, the callback parameter is not optional for findAndModify as the documentation suggests.  The first argument is used for query, the last is used for callback, and then sort, update, and options are used in that order.
Corrected optional arguments documentation
Merge pull request #1110 from FrancescaK/patch-2

grammatical errors
Merge branch 'master' into 1.4
Fixed issue
Merge branch 'FrancescaK-patch-1' into 1.4
Merge pull request #1111 from benighted/patch-1

Corrected optional arguments documentation for findAndModify
Merged in and fixed the OPLOG_REPLAY pull request
Merge branch 'meteor-oplog-replay' into 1.4
Merge pull request #1105 from WalrusCow/nonverbose

Add non-verbose inline mapReduce support
fix for verbose mode option for mapReduce
Fix for mapreduce readpreference issue #1093
made findAndRemove more explisit
Fixed readpreference docs #1088
Removed setImmediate usage #1045
Adding ability to change socket timeout on existing connections