Preparation for PECL release.

 - Added argument information for both functions
 - Changed C++ style comments into C style comments
 - Added function proto's
 - Added package.xml
 - Upped version number to 1.2

DomBlack#10

Merged DomBlack#4 into Master.

Conflict; crypto/crypto_scrypt-sse.c

Fixed windows builds.

Addition of a VS2008 project for doing the builds.