Updated tos-locate-jre for recent Xcode

Xcode is now in /Applications/Xcode.app for a pretty long time, so no fallback option is provided, you really should have moved from
/Developer by this time.
Actually found the headers in better place
Merge pull request #224 from farcaller/patch-1

Updated tos-locate-jre for recent Xcode
fixed printf debugging
disabled some resources to get CoapBlip compiled
Merge pull request #227 from thp-comnets/coapblip-fixes

CoapBlip fixes.

This looks pretty innoucous and shouldn't be affected by the PrintfC vs. SerialPrintfC discussion.