vchoi_fork

[svn-r12001] Purpose:
Moved gif2h5 tool to hl directory

Description:
Added a tools directory under the hl directory and moved the gif2h5 tool
to that directory.

Solution:
The gif2h5 tool was originally built in the tools directory, but this
introduced dependency issues that required special checks in the
Makefiles.am and required the top-level build order to be changed
because it depended on the HL library.
For simplicity in the Makefiles now and in the future, the gif2h5 tool
was moved to be underneath the hl library.

Platforms tested:
mir, copper, modi4, shanti