Merge pull request #340 from tanmaykm/devel

bump HDFS sha1
Patch Grid (performance improvements)
Patch Cairo
- writing to streams
- build
- refactoring text-handling, constants, names, and other cleanups
Bump Tk
Add ProfileView
Add missing ImageView dependency for ProfileView
Add GnuTLS
Merge pull request #341 from loladiro/devel

Add GnuTLS
Bump Color sha1 (defaults for distinguishable_colors)
ProfileView: add explicit Color version dependency
Change Graphs url
Merge pull request #342 from aviks/move-url

Update Graphs url
bumped PTools sha1.
for tracking julia @async change