Bring icu component from g11n consolidation.

Library is delivered to /usr/g++
Merge pull request #284 from pyhalov/icu

Bring icu component from g11n consolidation.
Enable intl php 5.4 extension
Merge pull request #285 from pyhalov/icu

Enable intl php 5.4 extension
Remove php warning about xdebug.so. If someone needs it he can turn it on manually.
Add php 5.4 idn extension
Merge pull request #286 from pyhalov/icu

Icu
Update amp meta package
Merge pull request #287 from pyhalov/icu

Update amp meta package