[sldev] Source Release for 1.18.4 RC2

[Joshua Bell]

Sorry about the delay - your friendly neighborhood release team is a bit 
short staffed at the moment. (We're hiring! Geeks wanted, inquire within.)

1.18.4 RC2 source release available here:  
https://wiki.secondlife.com/wiki/Source_downloads#ver_RC-1.18.4.2

Checksums:

25c692460833b1b4473abe792a67e6ce  
slviewer-darwin-libs-releasecandidate-1.18.4.2.tar.gz
1d9942fb7f9b704c41430950cbfff140  
slviewer-linux-libs-releasecandidate-1.18.4.2.tar.gz
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slviewer-src-releasecandidate-1.18.4.2.tar.gz
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slviewer-artwork-releasecandidate-1.18.4.2.zip
32fe6a348ea5935b8a61cac17b66eae0  slviewer-src-releasecandidate-1.18.4.2.zip
585e9b5e1a78ae08de44e02e769c8c89  
slviewer-win32-libs-releasecandidate-1.18.4.2.zip