[PHP-627] Allow single pipeline operator arg in MongoCollection::aggregate()
Merged pull request #265
Fixed the reflection test after introducing two new methods on MongoCursor.
Merged pull request #266
Fixed MongoDate serialisation and deserialisation with negative timestamps.

Apparently MongoDB uses the Euclidean modulo operator instead of C's truncated
modulo operator. This is difficult to test automatically, as calling out to the
mongo shell is impractical.
Merged pull request #268
Fixed the MongoGridFSFile::write() method after an earlier broken fix.
Merged pull request #267
Fixed PHP-479: Compiler warnings

I've also added the forcing of -Wall to the ./rebuild.sh script. Please use
that so that we catch compiler warnings in the future before committing.
Merged pull request #270
BUMP 1.3.3
Fixed compiling on PHP 5.2 and PHP 5.3 which has a different init_properties.

Why this is in a macro is beyond me!
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