Bump Images and ImageView sha1s

- Fast (IIR) Gaussian filtering
- Introduce image Overlays
- Better pretty-printing
- StridedArray -> AbstractArray
- Clean up transposition using new cache-friendly transpose!()
- Enhance documentation
Merge branch 'devel' of git://github.com/JuliaLang/METADATA.jl into devel
Merge pull request #271 from tanmaykm/devel

bumped HDFS sha1. added requires file.
Reorganize ODBC versions; bump sha1 for v0.1 and v0.2
Curl: fix CR/LF line ending
One more bump to ODBC sha1
Add Optim v0.1.5
[ODBC] Bump sha1
Bump ImmutableArrays sha1
Merge pull request #274 from jayschwa/ImmutableArrays

Bump ImmutableArrays sha1